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Finding the Fourth Proportional to 109,532.59, 151,159.56 and 61,785.92

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Solution

The fourth proportional to 109,532.59, 151,159.56 and 61,785.92 is: 85,267.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,532.59 : 151,159.56 = 61,785.92 : x
  2. Step 2: Convert to fraction form
    109,532.59/151,159.56 = 61,785.92/x
  3. Step 3: Cross multiply
    109,532.59x = 151,159.56 × 61,785.92
  4. Step 4: Simplify right side
    109,532.59x = 9,339,532,481.40
  5. Step 5: Solve for x
    x = 9,339,532,481.40/109,532.59
  6. Step 6: Final answer
    x = 85,267.16

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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.