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Finding the Fourth Proportional to 85,168.68, 117,531.84 and 48,374.64

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Solution

The fourth proportional to 85,168.68, 117,531.84 and 48,374.64 is: 66,756.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,168.68 : 117,531.84 = 48,374.64 : x
  2. Step 2: Convert to fraction form
    85,168.68/117,531.84 = 48,374.64/x
  3. Step 3: Cross multiply
    85,168.68x = 117,531.84 × 48,374.64
  4. Step 4: Simplify right side
    85,168.68x = 5,685,560,593.23
  5. Step 5: Solve for x
    x = 5,685,560,593.23/85,168.68
  6. Step 6: Final answer
    x = 66,756.47

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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.