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Finding the Fourth Proportional to 66,463.80, 99,695.70 and 27,049.20

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Solution

The fourth proportional to 66,463.80, 99,695.70 and 27,049.20 is: 40,573.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,463.80 : 99,695.70 = 27,049.20 : x
  2. Step 2: Convert to fraction form
    66,463.80/99,695.70 = 27,049.20/x
  3. Step 3: Cross multiply
    66,463.80x = 99,695.70 × 27,049.20
  4. Step 4: Simplify right side
    66,463.80x = 2,696,688,928.44
  5. Step 5: Solve for x
    x = 2,696,688,928.44/66,463.80
  6. Step 6: Final answer
    x = 40,573.80

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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.