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Finding the Fourth Proportional to 69,963.52, 96,546.80 and 38,131.76

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Solution

The fourth proportional to 69,963.52, 96,546.80 and 38,131.76 is: 52,620.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,963.52 : 96,546.80 = 38,131.76 : x
  2. Step 2: Convert to fraction form
    69,963.52/96,546.80 = 38,131.76/x
  3. Step 3: Cross multiply
    69,963.52x = 96,546.80 × 38,131.76
  4. Step 4: Simplify right side
    69,963.52x = 3,681,499,406.37
  5. Step 5: Solve for x
    x = 3,681,499,406.37/69,963.52
  6. Step 6: Final answer
    x = 52,620.27

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1.5x scale

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.