Home / 20,511,552.20-28,314,657.66-12,780,414.32

Finding the Fourth Proportional to 20,511,552.20, 28,314,657.66 and 12,780,414.32

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Solution

The fourth proportional to 20,511,552.20, 28,314,657.66 and 12,780,414.32 is: 17,642,402.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    20,511,552.20 : 28,314,657.66 = 12,780,414.32 : x
  2. Step 2: Convert to fraction form
    20,511,552.20/28,314,657.66 = 12,780,414.32/x
  3. Step 3: Cross multiply
    20,511,552.20x = 28,314,657.66 × 12,780,414.32
  4. Step 4: Simplify right side
    20,511,552.20x = 361,873,056,223,761.69
  5. Step 5: Solve for x
    x = 361,873,056,223,761.69/20,511,552.20
  6. Step 6: Final answer
    x = 17,642,402.33

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.