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Finding the Fourth Proportional to 157,892.92, 217,892.28 and 85,295.83

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Solution

The fourth proportional to 157,892.92, 217,892.28 and 85,295.83 is: 117,708.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,892.92 : 217,892.28 = 85,295.83 : x
  2. Step 2: Convert to fraction form
    157,892.92/217,892.28 = 85,295.83/x
  3. Step 3: Cross multiply
    157,892.92x = 217,892.28 × 85,295.83
  4. Step 4: Simplify right side
    157,892.92x = 18,585,302,873.19
  5. Step 5: Solve for x
    x = 18,585,302,873.19/157,892.92
  6. Step 6: Final answer
    x = 117,708.27

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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.