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Finding the Fourth Proportional to 74,472.90, 111,642.93 and 27,693.78

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Solution

The fourth proportional to 74,472.90, 111,642.93 and 27,693.78 is: 41,515.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,472.90 : 111,642.93 = 27,693.78 : x
  2. Step 2: Convert to fraction form
    74,472.90/111,642.93 = 27,693.78/x
  3. Step 3: Cross multiply
    74,472.90x = 111,642.93 × 27,693.78
  4. Step 4: Simplify right side
    74,472.90x = 3,091,814,741.98
  5. Step 5: Solve for x
    x = 3,091,814,741.98/74,472.90
  6. Step 6: Final answer
    x = 41,515.97

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.