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Finding the Fourth Proportional to 113,358.76, 156,436 and 63,057.76

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Solution

The fourth proportional to 113,358.76, 156,436 and 63,057.76 is: 87,020.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,358.76 : 156,436 = 63,057.76 : x
  2. Step 2: Convert to fraction form
    113,358.76/156,436 = 63,057.76/x
  3. Step 3: Cross multiply
    113,358.76x = 156,436 × 63,057.76
  4. Step 4: Simplify right side
    113,358.76x = 9,864,503,743.36
  5. Step 5: Solve for x
    x = 9,864,503,743.36/113,358.76
  6. Step 6: Final answer
    x = 87,020.22

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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.