Home / 18,909,889.20-28,360,897.20-8,127,541.80

Finding the Fourth Proportional to 18,909,889.20, 28,360,897.20 and 8,127,541.80

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Solution

The fourth proportional to 18,909,889.20, 28,360,897.20 and 8,127,541.80 is: 12,189,620.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,889.20 : 28,360,897.20 = 8,127,541.80 : x
  2. Step 2: Convert to fraction form
    18,909,889.20/28,360,897.20 = 8,127,541.80/x
  3. Step 3: Cross multiply
    18,909,889.20x = 28,360,897.20 × 8,127,541.80
  4. Step 4: Simplify right side
    18,909,889.20x = 230,504,377,478,502.94
  5. Step 5: Solve for x
    x = 230,504,377,478,502.94/18,909,889.20
  6. Step 6: Final answer
    x = 12,189,620.73

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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.