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Finding the Fourth Proportional to 107,049.62, 147,717.95 and 61,109.87

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Solution

The fourth proportional to 107,049.62, 147,717.95 and 61,109.87 is: 84,325.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,049.62 : 147,717.95 = 61,109.87 : x
  2. Step 2: Convert to fraction form
    107,049.62/147,717.95 = 61,109.87/x
  3. Step 3: Cross multiply
    107,049.62x = 147,717.95 × 61,109.87
  4. Step 4: Simplify right side
    107,049.62x = 9,027,023,677.03
  5. Step 5: Solve for x
    x = 9,027,023,677.03/107,049.62
  6. Step 6: Final answer
    x = 84,325.60

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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.