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Finding the Fourth Proportional to 73,127.79, 109,691.64 and 26,380.62

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Solution

The fourth proportional to 73,127.79, 109,691.64 and 26,380.62 is: 39,570.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,127.79 : 109,691.64 = 26,380.62 : x
  2. Step 2: Convert to fraction form
    73,127.79/109,691.64 = 26,380.62/x
  3. Step 3: Cross multiply
    73,127.79x = 109,691.64 × 26,380.62
  4. Step 4: Simplify right side
    73,127.79x = 2,893,733,472.02
  5. Step 5: Solve for x
    x = 2,893,733,472.02/73,127.79
  6. Step 6: Final answer
    x = 39,570.91

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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.