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Finding the Fourth Proportional to 107,990.68, 149,023.65 and 58,930.42

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Solution

The fourth proportional to 107,990.68, 149,023.65 and 58,930.42 is: 81,322.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,990.68 : 149,023.65 = 58,930.42 : x
  2. Step 2: Convert to fraction form
    107,990.68/149,023.65 = 58,930.42/x
  3. Step 3: Cross multiply
    107,990.68x = 149,023.65 × 58,930.42
  4. Step 4: Simplify right side
    107,990.68x = 8,782,026,132.86
  5. Step 5: Solve for x
    x = 8,782,026,132.86/107,990.68
  6. Step 6: Final answer
    x = 81,322.08

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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.