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Finding the Fourth Proportional to 84,937.78, 127,400.16 and 25,773.76

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Solution

The fourth proportional to 84,937.78, 127,400.16 and 25,773.76 is: 38,658.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,937.78 : 127,400.16 = 25,773.76 : x
  2. Step 2: Convert to fraction form
    84,937.78/127,400.16 = 25,773.76/x
  3. Step 3: Cross multiply
    84,937.78x = 127,400.16 × 25,773.76
  4. Step 4: Simplify right side
    84,937.78x = 3,283,581,147.80
  5. Step 5: Solve for x
    x = 3,283,581,147.80/84,937.78
  6. Step 6: Final answer
    x = 38,658.66

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1.5x scale

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.