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Finding the Fourth Proportional to 68,452.76, 102,602.84 and 28,449.43

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Solution

The fourth proportional to 68,452.76, 102,602.84 and 28,449.43 is: 42,642.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,452.76 : 102,602.84 = 28,449.43 : x
  2. Step 2: Convert to fraction form
    68,452.76/102,602.84 = 28,449.43/x
  3. Step 3: Cross multiply
    68,452.76x = 102,602.84 × 28,449.43
  4. Step 4: Simplify right side
    68,452.76x = 2,918,991,915.63
  5. Step 5: Solve for x
    x = 2,918,991,915.63/68,452.76
  6. Step 6: Final answer
    x = 42,642.43

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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.