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Finding the Fourth Proportional to 78,462.17, 108,275.52 and 44,473.79

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Solution

The fourth proportional to 78,462.17, 108,275.52 and 44,473.79 is: 61,372.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,462.17 : 108,275.52 = 44,473.79 : x
  2. Step 2: Convert to fraction form
    78,462.17/108,275.52 = 44,473.79/x
  3. Step 3: Cross multiply
    78,462.17x = 108,275.52 × 44,473.79
  4. Step 4: Simplify right side
    78,462.17x = 4,815,421,974.87
  5. Step 5: Solve for x
    x = 4,815,421,974.87/78,462.17
  6. Step 6: Final answer
    x = 61,372.53

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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.