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Finding the Fourth Proportional to 107,989.20, 161,935.20 and 41,407.20

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Solution

The fourth proportional to 107,989.20, 161,935.20 and 41,407.20 is: 62,092.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,989.20 : 161,935.20 = 41,407.20 : x
  2. Step 2: Convert to fraction form
    107,989.20/161,935.20 = 41,407.20/x
  3. Step 3: Cross multiply
    107,989.20x = 161,935.20 × 41,407.20
  4. Step 4: Simplify right side
    107,989.20x = 6,705,283,213.44
  5. Step 5: Solve for x
    x = 6,705,283,213.44/107,989.20
  6. Step 6: Final answer
    x = 62,092.16

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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.