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Finding the Fourth Proportional to 156,185.96, 215,535.60 and 84,565.76

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Solution

The fourth proportional to 156,185.96, 215,535.60 and 84,565.76 is: 116,700.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,185.96 : 215,535.60 = 84,565.76 : x
  2. Step 2: Convert to fraction form
    156,185.96/215,535.60 = 84,565.76/x
  3. Step 3: Cross multiply
    156,185.96x = 215,535.60 × 84,565.76
  4. Step 4: Simplify right side
    156,185.96x = 18,226,930,743.38
  5. Step 5: Solve for x
    x = 18,226,930,743.38/156,185.96
  6. Step 6: Final answer
    x = 116,700.19

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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.