Home / 19,309,843.20-28,890,115.20-12,591,379.20

Finding the Fourth Proportional to 19,309,843.20, 28,890,115.20 and 12,591,379.20

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Solution

The fourth proportional to 19,309,843.20, 28,890,115.20 and 12,591,379.20 is: 18,838,392.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309,843.20 : 28,890,115.20 = 12,591,379.20 : x
  2. Step 2: Convert to fraction form
    19,309,843.20/28,890,115.20 = 12,591,379.20/x
  3. Step 3: Cross multiply
    19,309,843.20x = 28,890,115.20 × 12,591,379.20
  4. Step 4: Simplify right side
    19,309,843.20x = 363,766,395,614,883.81
  5. Step 5: Solve for x
    x = 363,766,395,614,883.81/19,309,843.20
  6. Step 6: Final answer
    x = 18,838,392.00

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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.