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Finding the Fourth Proportional to 106,638.80, 159,835.17 and 40,036.45

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Solution

The fourth proportional to 106,638.80, 159,835.17 and 40,036.45 is: 60,008.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    106,638.80 : 159,835.17 = 40,036.45 : x
  2. Step 2: Convert to fraction form
    106,638.80/159,835.17 = 40,036.45/x
  3. Step 3: Cross multiply
    106,638.80x = 159,835.17 × 40,036.45
  4. Step 4: Simplify right side
    106,638.80x = 6,399,231,792.59
  5. Step 5: Solve for x
    x = 6,399,231,792.59/106,638.80
  6. Step 6: Final answer
    x = 60,008.48

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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.