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Finding the Fourth Proportional to 71,592.90, 98,793.96 and 39,759.90

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Solution

The fourth proportional to 71,592.90, 98,793.96 and 39,759.90 is: 54,866.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,592.90 : 98,793.96 = 39,759.90 : x
  2. Step 2: Convert to fraction form
    71,592.90/98,793.96 = 39,759.90/x
  3. Step 3: Cross multiply
    71,592.90x = 98,793.96 × 39,759.90
  4. Step 4: Simplify right side
    71,592.90x = 3,928,037,970.20
  5. Step 5: Solve for x
    x = 3,928,037,970.20/71,592.90
  6. Step 6: Final answer
    x = 54,866.31

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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.