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Finding the Fourth Proportional to 88,901.90, 133,028.85 and 65,573.90

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Solution

The fourth proportional to 88,901.90, 133,028.85 and 65,573.90 is: 98,121.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,901.90 : 133,028.85 = 65,573.90 : x
  2. Step 2: Convert to fraction form
    88,901.90/133,028.85 = 65,573.90/x
  3. Step 3: Cross multiply
    88,901.90x = 133,028.85 × 65,573.90
  4. Step 4: Simplify right side
    88,901.90x = 8,723,220,507.02
  5. Step 5: Solve for x
    x = 8,723,220,507.02/88,901.90
  6. Step 6: Final answer
    x = 98,121.87

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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.