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Finding the Fourth Proportional to 107,988.61, 149,023.86 and 60,241.92

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Solution

The fourth proportional to 107,988.61, 149,023.86 and 60,241.92 is: 83,133.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,988.61 : 149,023.86 = 60,241.92 : x
  2. Step 2: Convert to fraction form
    107,988.61/149,023.86 = 60,241.92/x
  3. Step 3: Cross multiply
    107,988.61x = 149,023.86 × 60,241.92
  4. Step 4: Simplify right side
    107,988.61x = 8,977,483,452.21
  5. Step 5: Solve for x
    x = 8,977,483,452.21/107,988.61
  6. Step 6: Final answer
    x = 83,133.61

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.