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Finding the Fourth Proportional to 157,536.79, 217,398.14 and 85,912.54

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Solution

The fourth proportional to 157,536.79, 217,398.14 and 85,912.54 is: 118,557.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,536.79 : 217,398.14 = 85,912.54 : x
  2. Step 2: Convert to fraction form
    157,536.79/217,398.14 = 85,912.54/x
  3. Step 3: Cross multiply
    157,536.79x = 217,398.14 × 85,912.54
  4. Step 4: Simplify right side
    157,536.79x = 18,677,226,398.68
  5. Step 5: Solve for x
    x = 18,677,226,398.68/157,536.79
  6. Step 6: Final answer
    x = 118,557.87

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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.