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Finding the Fourth Proportional to 106,545.90, 159,708.15 and 43,338.90

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Solution

The fourth proportional to 106,545.90, 159,708.15 and 43,338.90 is: 64,963.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,545.90 : 159,708.15 = 43,338.90 : x
  2. Step 2: Convert to fraction form
    106,545.90/159,708.15 = 43,338.90/x
  3. Step 3: Cross multiply
    106,545.90x = 159,708.15 × 43,338.90
  4. Step 4: Simplify right side
    106,545.90x = 6,921,575,542.04
  5. Step 5: Solve for x
    x = 6,921,575,542.04/106,545.90
  6. Step 6: Final answer
    x = 64,963.32

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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.