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Finding the Fourth Proportional to 113,726.72, 156,942.48 and 63,425.68

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Solution

The fourth proportional to 113,726.72, 156,942.48 and 63,425.68 is: 87,527.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,726.72 : 156,942.48 = 63,425.68 : x
  2. Step 2: Convert to fraction form
    113,726.72/156,942.48 = 63,425.68/x
  3. Step 3: Cross multiply
    113,726.72x = 156,942.48 × 63,425.68
  4. Step 4: Simplify right side
    113,726.72x = 9,954,183,514.89
  5. Step 5: Solve for x
    x = 9,954,183,514.89/113,726.72
  6. Step 6: Final answer
    x = 87,527.22

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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.