Home / 19,309,664.70-28,889,847.45-12,591,200.70

Finding the Fourth Proportional to 19,309,664.70, 28,889,847.45 and 12,591,200.70

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Solution

The fourth proportional to 19,309,664.70, 28,889,847.45 and 12,591,200.70 is: 18,838,124.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,309,664.70 : 28,889,847.45 = 12,591,200.70 : x
  2. Step 2: Convert to fraction form
    19,309,664.70/28,889,847.45 = 12,591,200.70/x
  3. Step 3: Cross multiply
    19,309,664.70x = 28,889,847.45 × 12,591,200.70
  4. Step 4: Simplify right side
    19,309,664.70x = 363,757,867,435,333.19
  5. Step 5: Solve for x
    x = 363,757,867,435,333.19/19,309,664.70
  6. Step 6: Final answer
    x = 18,838,124.49

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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.