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Finding the Fourth Proportional to 66,528.80, 99,793.20 and 59,311.70

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Solution

The fourth proportional to 66,528.80, 99,793.20 and 59,311.70 is: 88,967.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,528.80 : 99,793.20 = 59,311.70 : x
  2. Step 2: Convert to fraction form
    66,528.80/99,793.20 = 59,311.70/x
  3. Step 3: Cross multiply
    66,528.80x = 99,793.20 × 59,311.70
  4. Step 4: Simplify right side
    66,528.80x = 5,918,904,340.44
  5. Step 5: Solve for x
    x = 5,918,904,340.44/66,528.80
  6. Step 6: Final answer
    x = 88,967.55

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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.