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Finding the Fourth Proportional to 60,499.20, 90,748.80 and 34,255.20

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Solution

The fourth proportional to 60,499.20, 90,748.80 and 34,255.20 is: 51,382.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,499.20 : 90,748.80 = 34,255.20 : x
  2. Step 2: Convert to fraction form
    60,499.20/90,748.80 = 34,255.20/x
  3. Step 3: Cross multiply
    60,499.20x = 90,748.80 × 34,255.20
  4. Step 4: Simplify right side
    60,499.20x = 3,108,618,293.76
  5. Step 5: Solve for x
    x = 3,108,618,293.76/60,499.20
  6. Step 6: Final answer
    x = 51,382.80

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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.