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Finding the Fourth Proportional to 74,851.44, 112,276.74 and 18,691.44

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Solution

The fourth proportional to 74,851.44, 112,276.74 and 18,691.44 is: 28,037.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,851.44 : 112,276.74 = 18,691.44 : x
  2. Step 2: Convert to fraction form
    74,851.44/112,276.74 = 18,691.44/x
  3. Step 3: Cross multiply
    74,851.44x = 112,276.74 × 18,691.44
  4. Step 4: Simplify right side
    74,851.44x = 2,098,613,949.11
  5. Step 5: Solve for x
    x = 2,098,613,949.11/74,851.44
  6. Step 6: Final answer
    x = 28,037.06

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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.