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Finding the Fourth Proportional to 187,884.76, 281,648.92 and 69,475.72

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Solution

The fourth proportional to 187,884.76, 281,648.92 and 69,475.72 is: 104,147.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    187,884.76 : 281,648.92 = 69,475.72 : x
  2. Step 2: Convert to fraction form
    187,884.76/281,648.92 = 69,475.72/x
  3. Step 3: Cross multiply
    187,884.76x = 281,648.92 × 69,475.72
  4. Step 4: Simplify right side
    187,884.76x = 19,567,761,504.22
  5. Step 5: Solve for x
    x = 19,567,761,504.22/187,884.76
  6. Step 6: Final answer
    x = 104,147.68

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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.