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Finding the Fourth Proportional to 269,298.72, 403,823.84 and 79,691.28

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Solution

The fourth proportional to 269,298.72, 403,823.84 and 79,691.28 is: 119,500.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    269,298.72 : 403,823.84 = 79,691.28 : x
  2. Step 2: Convert to fraction form
    269,298.72/403,823.84 = 79,691.28/x
  3. Step 3: Cross multiply
    269,298.72x = 403,823.84 × 79,691.28
  4. Step 4: Simplify right side
    269,298.72x = 32,181,238,704.12
  5. Step 5: Solve for x
    x = 32,181,238,704.12/269,298.72
  6. Step 6: Final answer
    x = 119,500.15

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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.