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Finding the Fourth Proportional to 109,532.52, 151,159.49 and 61,785.86

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Solution

The fourth proportional to 109,532.52, 151,159.49 and 61,785.86 is: 85,267.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,532.52 : 151,159.49 = 61,785.86 : x
  2. Step 2: Convert to fraction form
    109,532.52/151,159.49 = 61,785.86/x
  3. Step 3: Cross multiply
    109,532.52x = 151,159.49 × 61,785.86
  4. Step 4: Simplify right side
    109,532.52x = 9,339,518,022.08
  5. Step 5: Solve for x
    x = 9,339,518,022.08/109,532.52
  6. Step 6: Final answer
    x = 85,267.08

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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.