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Finding the Fourth Proportional to 713,669.63, 984,773.57 and 391,294.89

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Solution

The fourth proportional to 713,669.63, 984,773.57 and 391,294.89 is: 539,937.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    713,669.63 : 984,773.57 = 391,294.89 : x
  2. Step 2: Convert to fraction form
    713,669.63/984,773.57 = 391,294.89/x
  3. Step 3: Cross multiply
    713,669.63x = 984,773.57 × 391,294.89
  4. Step 4: Simplify right side
    713,669.63x = 385,336,863,791.58
  5. Step 5: Solve for x
    x = 385,336,863,791.58/713,669.63
  6. Step 6: Final answer
    x = 539,937.32

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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.