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Finding the Fourth Proportional to 54,765.72, 81,752.41 and 48,122.72

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Solution

The fourth proportional to 54,765.72, 81,752.41 and 48,122.72 is: 71,835.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,765.72 : 81,752.41 = 48,122.72 : x
  2. Step 2: Convert to fraction form
    54,765.72/81,752.41 = 48,122.72/x
  3. Step 3: Cross multiply
    54,765.72x = 81,752.41 × 48,122.72
  4. Step 4: Simplify right side
    54,765.72x = 3,934,148,335.76
  5. Step 5: Solve for x
    x = 3,934,148,335.76/54,765.72
  6. Step 6: Final answer
    x = 71,835.96

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.