Home / 19,152,640.80-28,728,961.20-11,986,279.20

Finding the Fourth Proportional to 19,152,640.80, 28,728,961.20 and 11,986,279.20

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Solution

The fourth proportional to 19,152,640.80, 28,728,961.20 and 11,986,279.20 is: 17,979,418.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,152,640.80 : 28,728,961.20 = 11,986,279.20 : x
  2. Step 2: Convert to fraction form
    19,152,640.80/28,728,961.20 = 11,986,279.20/x
  3. Step 3: Cross multiply
    19,152,640.80x = 28,728,961.20 × 11,986,279.20
  4. Step 4: Simplify right side
    19,152,640.80x = 344,353,350,069,167
  5. Step 5: Solve for x
    x = 344,353,350,069,167/19,152,640.80
  6. Step 6: Final answer
    x = 17,979,418.80

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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.