Home / 18,909,891.20-28,360,900.20-8,127,543.80

Finding the Fourth Proportional to 18,909,891.20, 28,360,900.20 and 8,127,543.80

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Solution

The fourth proportional to 18,909,891.20, 28,360,900.20 and 8,127,543.80 is: 12,189,623.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,891.20 : 28,360,900.20 = 8,127,543.80 : x
  2. Step 2: Convert to fraction form
    18,909,891.20/28,360,900.20 = 8,127,543.80/x
  3. Step 3: Cross multiply
    18,909,891.20x = 28,360,900.20 × 8,127,543.80
  4. Step 4: Simplify right side
    18,909,891.20x = 230,504,458,582,928.75
  5. Step 5: Solve for x
    x = 230,504,458,582,928.75/18,909,891.20
  6. Step 6: Final answer
    x = 12,189,623.73

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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.