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Finding the Fourth Proportional to 157,182.92, 216,917.28 and 85,567.70

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Solution

The fourth proportional to 157,182.92, 216,917.28 and 85,567.70 is: 118,086.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,182.92 : 216,917.28 = 85,567.70 : x
  2. Step 2: Convert to fraction form
    157,182.92/216,917.28 = 85,567.70/x
  3. Step 3: Cross multiply
    157,182.92x = 216,917.28 × 85,567.70
  4. Step 4: Simplify right side
    157,182.92x = 18,561,112,739.86
  5. Step 5: Solve for x
    x = 18,561,112,739.86/157,182.92
  6. Step 6: Final answer
    x = 118,086.07

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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.