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Finding the Fourth Proportional to 113,565.60, 156,709.08 and 65,833.92

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Solution

The fourth proportional to 113,565.60, 156,709.08 and 65,833.92 is: 90,844.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,565.60 : 156,709.08 = 65,833.92 : x
  2. Step 2: Convert to fraction form
    113,565.60/156,709.08 = 65,833.92/x
  3. Step 3: Cross multiply
    113,565.60x = 156,709.08 × 65,833.92
  4. Step 4: Simplify right side
    113,565.60x = 10,316,773,035.99
  5. Step 5: Solve for x
    x = 10,316,773,035.99/113,565.60
  6. Step 6: Final answer
    x = 90,844.17

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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.