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Finding the Fourth Proportional to 534,641.69, 801,955.61 and 129,837.21

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Solution

The fourth proportional to 534,641.69, 801,955.61 and 129,837.21 is: 194,754.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,641.69 : 801,955.61 = 129,837.21 : x
  2. Step 2: Convert to fraction form
    534,641.69/801,955.61 = 129,837.21/x
  3. Step 3: Cross multiply
    534,641.69x = 801,955.61 × 129,837.21
  4. Step 4: Simplify right side
    534,641.69x = 104,123,681,275.73
  5. Step 5: Solve for x
    x = 104,123,681,275.73/534,641.69
  6. Step 6: Final answer
    x = 194,754.14

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.