Home / 18,959,491.20-28,439,236.80-12,157,046.40

Finding the Fourth Proportional to 18,959,491.20, 28,439,236.80 and 12,157,046.40

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Solution

The fourth proportional to 18,959,491.20, 28,439,236.80 and 12,157,046.40 is: 18,235,569.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,959,491.20 : 28,439,236.80 = 12,157,046.40 : x
  2. Step 2: Convert to fraction form
    18,959,491.20/28,439,236.80 = 12,157,046.40/x
  3. Step 3: Cross multiply
    18,959,491.20x = 28,439,236.80 × 12,157,046.40
  4. Step 4: Simplify right side
    18,959,491.20x = 345,737,121,358,187.56
  5. Step 5: Solve for x
    x = 345,737,121,358,187.56/18,959,491.20
  6. Step 6: Final answer
    x = 18,235,569.60

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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.