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Finding the Fourth Proportional to 157,617.92, 217,508.50 and 85,997.92

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Solution

The fourth proportional to 157,617.92, 217,508.50 and 85,997.92 is: 118,674.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,617.92 : 217,508.50 = 85,997.92 : x
  2. Step 2: Convert to fraction form
    157,617.92/217,508.50 = 85,997.92/x
  3. Step 3: Cross multiply
    157,617.92x = 217,508.50 × 85,997.92
  4. Step 4: Simplify right side
    157,617.92x = 18,705,278,582.32
  5. Step 5: Solve for x
    x = 18,705,278,582.32/157,617.92
  6. Step 6: Final answer
    x = 118,674.82

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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.