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Finding the Fourth Proportional to 719,061.86, 992,304.20 and 396,771.70

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Solution

The fourth proportional to 719,061.86, 992,304.20 and 396,771.70 is: 547,544.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    719,061.86 : 992,304.20 = 396,771.70 : x
  2. Step 2: Convert to fraction form
    719,061.86/992,304.20 = 396,771.70/x
  3. Step 3: Cross multiply
    719,061.86x = 992,304.20 × 396,771.70
  4. Step 4: Simplify right side
    719,061.86x = 393,718,224,351.14
  5. Step 5: Solve for x
    x = 393,718,224,351.14/719,061.86
  6. Step 6: Final answer
    x = 547,544.30

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Double scale
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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.