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Finding the Fourth Proportional to 54,781.60, 75,598.60 and 29,631.10

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Solution

The fourth proportional to 54,781.60, 75,598.60 and 29,631.10 is: 40,890.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,781.60 : 75,598.60 = 29,631.10 : x
  2. Step 2: Convert to fraction form
    54,781.60/75,598.60 = 29,631.10/x
  3. Step 3: Cross multiply
    54,781.60x = 75,598.60 × 29,631.10
  4. Step 4: Simplify right side
    54,781.60x = 2,240,069,676.46
  5. Step 5: Solve for x
    x = 2,240,069,676.46/54,781.60
  6. Step 6: Final answer
    x = 40,890.91

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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.