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Finding the Fourth Proportional to 157,250.77, 235,892.76 and 90,689.43

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Solution

The fourth proportional to 157,250.77, 235,892.76 and 90,689.43 is: 136,043.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    157,250.77 : 235,892.76 = 90,689.43 : x
  2. Step 2: Convert to fraction form
    157,250.77/235,892.76 = 90,689.43/x
  3. Step 3: Cross multiply
    157,250.77x = 235,892.76 × 90,689.43
  4. Step 4: Simplify right side
    157,250.77x = 21,392,978,766.06
  5. Step 5: Solve for x
    x = 21,392,978,766.06/157,250.77
  6. Step 6: Final answer
    x = 136,043.71

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.