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Finding the Fourth Proportional to 85,806, 118,412.28 and 48,092.40

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Solution

The fourth proportional to 85,806, 118,412.28 and 48,092.40 is: 66,367.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,806 : 118,412.28 = 48,092.40 : x
  2. Step 2: Convert to fraction form
    85,806/118,412.28 = 48,092.40/x
  3. Step 3: Cross multiply
    85,806x = 118,412.28 × 48,092.40
  4. Step 4: Simplify right side
    85,806x = 5,694,730,734.67
  5. Step 5: Solve for x
    x = 5,694,730,734.67/85,806
  6. Step 6: Final answer
    x = 66,367.51

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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.