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Finding the Fourth Proportional to 113,665.78, 170,523.28 and 43,545.09

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Solution

The fourth proportional to 113,665.78, 170,523.28 and 43,545.09 is: 65,327.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,665.78 : 170,523.28 = 43,545.09 : x
  2. Step 2: Convert to fraction form
    113,665.78/170,523.28 = 43,545.09/x
  3. Step 3: Cross multiply
    113,665.78x = 170,523.28 × 43,545.09
  4. Step 4: Simplify right side
    113,665.78x = 7,425,452,023.65
  5. Step 5: Solve for x
    x = 7,425,452,023.65/113,665.78
  6. Step 6: Final answer
    x = 65,327.07

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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.