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Finding the Fourth Proportional to 140,327.76, 193,652.51 and 79,898.43

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Solution

The fourth proportional to 140,327.76, 193,652.51 and 79,898.43 is: 110,259.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,327.76 : 193,652.51 = 79,898.43 : x
  2. Step 2: Convert to fraction form
    140,327.76/193,652.51 = 79,898.43/x
  3. Step 3: Cross multiply
    140,327.76x = 193,652.51 × 79,898.43
  4. Step 4: Simplify right side
    140,327.76x = 15,472,531,841.26
  5. Step 5: Solve for x
    x = 15,472,531,841.26/140,327.76
  6. Step 6: Final answer
    x = 110,259.95

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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.