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Finding the Fourth Proportional to 89,862.90, 134,891.55 and 50,496.90

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Solution

The fourth proportional to 89,862.90, 134,891.55 and 50,496.90 is: 75,799.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,862.90 : 134,891.55 = 50,496.90 : x
  2. Step 2: Convert to fraction form
    89,862.90/134,891.55 = 50,496.90/x
  3. Step 3: Cross multiply
    89,862.90x = 134,891.55 × 50,496.90
  4. Step 4: Simplify right side
    89,862.90x = 6,811,605,111.20
  5. Step 5: Solve for x
    x = 6,811,605,111.20/89,862.90
  6. Step 6: Final answer
    x = 75,799.97

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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.