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Finding the Fourth Proportional to 74,167.68, 110,537.96 and 72,986.72

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Solution

The fourth proportional to 74,167.68, 110,537.96 and 72,986.72 is: 108,777.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,167.68 : 110,537.96 = 72,986.72 : x
  2. Step 2: Convert to fraction form
    74,167.68/110,537.96 = 72,986.72/x
  3. Step 3: Cross multiply
    74,167.68x = 110,537.96 × 72,986.72
  4. Step 4: Simplify right side
    74,167.68x = 8,067,803,135.89
  5. Step 5: Solve for x
    x = 8,067,803,135.89/74,167.68
  6. Step 6: Final answer
    x = 108,777.88

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.