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Finding the Fourth Proportional to 72,059.84, 108,155.36 and 38,354.16

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Solution

The fourth proportional to 72,059.84, 108,155.36 and 38,354.16 is: 57,566.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,059.84 : 108,155.36 = 38,354.16 : x
  2. Step 2: Convert to fraction form
    72,059.84/108,155.36 = 38,354.16/x
  3. Step 3: Cross multiply
    72,059.84x = 108,155.36 × 38,354.16
  4. Step 4: Simplify right side
    72,059.84x = 4,148,207,731.56
  5. Step 5: Solve for x
    x = 4,148,207,731.56/72,059.84
  6. Step 6: Final answer
    x = 57,566.15

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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.