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Finding the Fourth Proportional to 157,644.52, 217,531.62 and 90,598.12

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Solution

The fourth proportional to 157,644.52, 217,531.62 and 90,598.12 is: 125,015.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,644.52 : 217,531.62 = 90,598.12 : x
  2. Step 2: Convert to fraction form
    157,644.52/217,531.62 = 90,598.12/x
  3. Step 3: Cross multiply
    157,644.52x = 217,531.62 × 90,598.12
  4. Step 4: Simplify right side
    157,644.52x = 19,707,955,812.55
  5. Step 5: Solve for x
    x = 19,707,955,812.55/157,644.52
  6. Step 6: Final answer
    x = 125,015.17

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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.