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Finding the Fourth Proportional to 42,508.56, 63,749.88 and 34,168.80

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Solution

The fourth proportional to 42,508.56, 63,749.88 and 34,168.80 is: 51,242.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,508.56 : 63,749.88 = 34,168.80 : x
  2. Step 2: Convert to fraction form
    42,508.56/63,749.88 = 34,168.80/x
  3. Step 3: Cross multiply
    42,508.56x = 63,749.88 × 34,168.80
  4. Step 4: Simplify right side
    42,508.56x = 2,178,256,899.74
  5. Step 5: Solve for x
    x = 2,178,256,899.74/42,508.56
  6. Step 6: Final answer
    x = 51,242.78

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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.