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Finding the Fourth Proportional to 77,248.44, 106,581.42 and 43,713.72

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Solution

The fourth proportional to 77,248.44, 106,581.42 and 43,713.72 is: 60,312.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,248.44 : 106,581.42 = 43,713.72 : x
  2. Step 2: Convert to fraction form
    77,248.44/106,581.42 = 43,713.72/x
  3. Step 3: Cross multiply
    77,248.44x = 106,581.42 × 43,713.72
  4. Step 4: Simplify right side
    77,248.44x = 4,659,070,351.08
  5. Step 5: Solve for x
    x = 4,659,070,351.08/77,248.44
  6. Step 6: Final answer
    x = 60,312.81

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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.