Home / 18,928,400.70-28,392,601.05-12,125,955.90

Finding the Fourth Proportional to 18,928,400.70, 28,392,601.05 and 12,125,955.90

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Solution

The fourth proportional to 18,928,400.70, 28,392,601.05 and 12,125,955.90 is: 18,188,933.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,928,400.70 : 28,392,601.05 = 12,125,955.90 : x
  2. Step 2: Convert to fraction form
    18,928,400.70/28,392,601.05 = 12,125,955.90/x
  3. Step 3: Cross multiply
    18,928,400.70x = 28,392,601.05 × 12,125,955.90
  4. Step 4: Simplify right side
    18,928,400.70x = 344,287,428,218,593.69
  5. Step 5: Solve for x
    x = 344,287,428,218,593.69/18,928,400.70
  6. Step 6: Final answer
    x = 18,188,933.85

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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.