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Finding the Fourth Proportional to 85,770.92, 118,274.64 and 67,837.52

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Solution

The fourth proportional to 85,770.92, 118,274.64 and 67,837.52 is: 93,545.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,770.92 : 118,274.64 = 67,837.52 : x
  2. Step 2: Convert to fraction form
    85,770.92/118,274.64 = 67,837.52/x
  3. Step 3: Cross multiply
    85,770.92x = 118,274.64 × 67,837.52
  4. Step 4: Simplify right side
    85,770.92x = 8,023,458,256.49
  5. Step 5: Solve for x
    x = 8,023,458,256.49/85,770.92
  6. Step 6: Final answer
    x = 93,545.20

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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.