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Finding the Fourth Proportional to 99,694.20, 149,541.30 and 88,807.80

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Solution

The fourth proportional to 99,694.20, 149,541.30 and 88,807.80 is: 133,211.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,694.20 : 149,541.30 = 88,807.80 : x
  2. Step 2: Convert to fraction form
    99,694.20/149,541.30 = 88,807.80/x
  3. Step 3: Cross multiply
    99,694.20x = 149,541.30 × 88,807.80
  4. Step 4: Simplify right side
    99,694.20x = 13,280,433,862.14
  5. Step 5: Solve for x
    x = 13,280,433,862.14/99,694.20
  6. Step 6: Final answer
    x = 133,211.70

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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.