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Finding the Fourth Proportional to 157,701.92, 217,633.92 and 86,086.16

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Solution

The fourth proportional to 157,701.92, 217,633.92 and 86,086.16 is: 118,801.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,701.92 : 217,633.92 = 86,086.16 : x
  2. Step 2: Convert to fraction form
    157,701.92/217,633.92 = 86,086.16/x
  3. Step 3: Cross multiply
    157,701.92x = 217,633.92 × 86,086.16
  4. Step 4: Simplify right side
    157,701.92x = 18,735,268,458.55
  5. Step 5: Solve for x
    x = 18,735,268,458.55/157,701.92
  6. Step 6: Final answer
    x = 118,801.78

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1.5x scale

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.