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Finding the Fourth Proportional to 74,461.20, 111,691.80 and 58,714.80

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Solution

The fourth proportional to 74,461.20, 111,691.80 and 58,714.80 is: 88,072.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,461.20 : 111,691.80 = 58,714.80 : x
  2. Step 2: Convert to fraction form
    74,461.20/111,691.80 = 58,714.80/x
  3. Step 3: Cross multiply
    74,461.20x = 111,691.80 × 58,714.80
  4. Step 4: Simplify right side
    74,461.20x = 6,557,961,698.64
  5. Step 5: Solve for x
    x = 6,557,961,698.64/74,461.20
  6. Step 6: Final answer
    x = 88,072.20

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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.