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Finding the Fourth Proportional to 101,895.80, 152,843.70 and 74,247.80

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Solution

The fourth proportional to 101,895.80, 152,843.70 and 74,247.80 is: 111,371.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,895.80 : 152,843.70 = 74,247.80 : x
  2. Step 2: Convert to fraction form
    101,895.80/152,843.70 = 74,247.80/x
  3. Step 3: Cross multiply
    101,895.80x = 152,843.70 × 74,247.80
  4. Step 4: Simplify right side
    101,895.80x = 11,348,308,468.86
  5. Step 5: Solve for x
    x = 11,348,308,468.86/101,895.80
  6. Step 6: Final answer
    x = 111,371.70

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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.