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Finding the Fourth Proportional to 157,553.66, 217,416.20 and 89,561.72

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Solution

The fourth proportional to 157,553.66, 217,416.20 and 89,561.72 is: 123,590.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,553.66 : 217,416.20 = 89,561.72 : x
  2. Step 2: Convert to fraction form
    157,553.66/217,416.20 = 89,561.72/x
  3. Step 3: Cross multiply
    157,553.66x = 217,416.20 × 89,561.72
  4. Step 4: Simplify right side
    157,553.66x = 19,472,167,292.97
  5. Step 5: Solve for x
    x = 19,472,167,292.97/157,553.66
  6. Step 6: Final answer
    x = 123,590.70

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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.