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Finding the Fourth Proportional to 113,352.10, 169,920.15 and 42,255.70

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Solution

The fourth proportional to 113,352.10, 169,920.15 and 42,255.70 is: 63,343.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,352.10 : 169,920.15 = 42,255.70 : x
  2. Step 2: Convert to fraction form
    113,352.10/169,920.15 = 42,255.70/x
  3. Step 3: Cross multiply
    113,352.10x = 169,920.15 × 42,255.70
  4. Step 4: Simplify right side
    113,352.10x = 7,180,094,882.36
  5. Step 5: Solve for x
    x = 7,180,094,882.36/113,352.10
  6. Step 6: Final answer
    x = 63,343.29

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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.