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Finding the Fourth Proportional to 48,516.06, 66,962.10 and 28,377.89

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Solution

The fourth proportional to 48,516.06, 66,962.10 and 28,377.89 is: 39,167.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,516.06 : 66,962.10 = 28,377.89 : x
  2. Step 2: Convert to fraction form
    48,516.06/66,962.10 = 28,377.89/x
  3. Step 3: Cross multiply
    48,516.06x = 66,962.10 × 28,377.89
  4. Step 4: Simplify right side
    48,516.06x = 1,900,243,107.97
  5. Step 5: Solve for x
    x = 1,900,243,107.97/48,516.06
  6. Step 6: Final answer
    x = 39,167.30

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.