Home / 12,856,677.60-19,171,426.20-12,741,281.76

Finding the Fourth Proportional to 12,856,677.60, 19,171,426.20 and 12,741,281.76

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Solution

The fourth proportional to 12,856,677.60, 19,171,426.20 and 12,741,281.76 is: 18,999,351.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,856,677.60 : 19,171,426.20 = 12,741,281.76 : x
  2. Step 2: Convert to fraction form
    12,856,677.60/19,171,426.20 = 12,741,281.76/x
  3. Step 3: Cross multiply
    12,856,677.60x = 19,171,426.20 × 12,741,281.76
  4. Step 4: Simplify right side
    12,856,677.60x = 244,268,542,955,246.09
  5. Step 5: Solve for x
    x = 244,268,542,955,246.09/12,856,677.60
  6. Step 6: Final answer
    x = 18,999,351.98

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.