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Finding the Fourth Proportional to 85,591.66, 118,092.80 and 49,291.60

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Solution

The fourth proportional to 85,591.66, 118,092.80 and 49,291.60 is: 68,008.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,591.66 : 118,092.80 = 49,291.60 : x
  2. Step 2: Convert to fraction form
    85,591.66/118,092.80 = 49,291.60/x
  3. Step 3: Cross multiply
    85,591.66x = 118,092.80 × 49,291.60
  4. Step 4: Simplify right side
    85,591.66x = 5,820,983,060.48
  5. Step 5: Solve for x
    x = 5,820,983,060.48/85,591.66
  6. Step 6: Final answer
    x = 68,008.76

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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.