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Finding the Fourth Proportional to 157,632.92, 217,529.16 and 86,012.96

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Solution

The fourth proportional to 157,632.92, 217,529.16 and 86,012.96 is: 118,695.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,632.92 : 217,529.16 = 86,012.96 : x
  2. Step 2: Convert to fraction form
    157,632.92/217,529.16 = 86,012.96/x
  3. Step 3: Cross multiply
    157,632.92x = 217,529.16 × 86,012.96
  4. Step 4: Simplify right side
    157,632.92x = 18,710,326,937.91
  5. Step 5: Solve for x
    x = 18,710,326,937.91/157,632.92
  6. Step 6: Final answer
    x = 118,695.56

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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.