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Finding the Fourth Proportional to 534,641.75, 801,955.70 and 129,837.28

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Solution

The fourth proportional to 534,641.75, 801,955.70 and 129,837.28 is: 194,754.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    534,641.75 : 801,955.70 = 129,837.28 : x
  2. Step 2: Convert to fraction form
    534,641.75/801,955.70 = 129,837.28/x
  3. Step 3: Cross multiply
    534,641.75x = 801,955.70 × 129,837.28
  4. Step 4: Simplify right side
    534,641.75x = 104,123,746,835.31
  5. Step 5: Solve for x
    x = 104,123,746,835.31/534,641.75
  6. Step 6: Final answer
    x = 194,754.24

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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.