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Finding the Fourth Proportional to 22,019,947.20, 33,029,920.80 and 20,035,900.80

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Solution

The fourth proportional to 22,019,947.20, 33,029,920.80 and 20,035,900.80 is: 30,053,851.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,019,947.20 : 33,029,920.80 = 20,035,900.80 : x
  2. Step 2: Convert to fraction form
    22,019,947.20/33,029,920.80 = 20,035,900.80/x
  3. Step 3: Cross multiply
    22,019,947.20x = 33,029,920.80 × 20,035,900.80
  4. Step 4: Simplify right side
    22,019,947.20x = 661,784,216,580,656.62
  5. Step 5: Solve for x
    x = 661,784,216,580,656.62/22,019,947.20
  6. Step 6: Final answer
    x = 30,053,851.20

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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.