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Finding the Fourth Proportional to 1,294,732,373.02, 1,786,727,314.11 and 722,509,425.66

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Solution

The fourth proportional to 1,294,732,373.02, 1,786,727,314.11 and 722,509,425.66 is: 997,061,132.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,294,732,373.02 : 1,786,727,314.11 = 722,509,425.66 : x
  2. Step 2: Convert to fraction form
    1,294,732,373.02/1,786,727,314.11 = 722,509,425.66/x
  3. Step 3: Cross multiply
    1,294,732,373.02x = 1,786,727,314.11 × 722,509,425.66
  4. Step 4: Simplify right side
    1,294,732,373.02x = 1,290,927,325,528,650,496
  5. Step 5: Solve for x
    x = 1,290,927,325,528,650,496/1,294,732,373.02
  6. Step 6: Final answer
    x = 997,061,132.04

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Double scale
Find fourth proportional to 1,294,732,374.02, 1,786,727,315.49 and 722,509,426.66
Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.