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Finding the Fourth Proportional to 66,443.46, 99,691.74 and 27,003.66

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Solution

The fourth proportional to 66,443.46, 99,691.74 and 27,003.66 is: 40,516.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,443.46 : 99,691.74 = 27,003.66 : x
  2. Step 2: Convert to fraction form
    66,443.46/99,691.74 = 27,003.66/x
  3. Step 3: Cross multiply
    66,443.46x = 99,691.74 × 27,003.66
  4. Step 4: Simplify right side
    66,443.46x = 2,692,041,851.77
  5. Step 5: Solve for x
    x = 2,692,041,851.77/66,443.46
  6. Step 6: Final answer
    x = 40,516.28

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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.