Home / 18,909,912.70-28,360,932.45-8,127,565.30

Finding the Fourth Proportional to 18,909,912.70, 28,360,932.45 and 8,127,565.30

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Solution

The fourth proportional to 18,909,912.70, 28,360,932.45 and 8,127,565.30 is: 12,189,655.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909,912.70 : 28,360,932.45 = 8,127,565.30 : x
  2. Step 2: Convert to fraction form
    18,909,912.70/28,360,932.45 = 8,127,565.30/x
  3. Step 3: Cross multiply
    18,909,912.70x = 28,360,932.45 × 8,127,565.30
  4. Step 4: Simplify right side
    18,909,912.70x = 230,505,330,456,263.97
  5. Step 5: Solve for x
    x = 230,505,330,456,263.97/18,909,912.70
  6. Step 6: Final answer
    x = 12,189,655.98

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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.