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Finding the Fourth Proportional to 644,084.98, 888,865.06 and 357,605.12

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Solution

The fourth proportional to 644,084.98, 888,865.06 and 357,605.12 is: 493,510.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    644,084.98 : 888,865.06 = 357,605.12 : x
  2. Step 2: Convert to fraction form
    644,084.98/888,865.06 = 357,605.12/x
  3. Step 3: Cross multiply
    644,084.98x = 888,865.06 × 357,605.12
  4. Step 4: Simplify right side
    644,084.98x = 317,862,696,445.11
  5. Step 5: Solve for x
    x = 317,862,696,445.11/644,084.98
  6. Step 6: Final answer
    x = 493,510.49

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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.