Home / 28,015,891.20-42,023,836.80-17,198,114.40

Finding the Fourth Proportional to 28,015,891.20, 42,023,836.80 and 17,198,114.40

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Solution

The fourth proportional to 28,015,891.20, 42,023,836.80 and 17,198,114.40 is: 25,797,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,015,891.20 : 42,023,836.80 = 17,198,114.40 : x
  2. Step 2: Convert to fraction form
    28,015,891.20/42,023,836.80 = 17,198,114.40/x
  3. Step 3: Cross multiply
    28,015,891.20x = 42,023,836.80 × 17,198,114.40
  4. Step 4: Simplify right side
    28,015,891.20x = 722,730,752,813,329.75
  5. Step 5: Solve for x
    x = 722,730,752,813,329.75/28,015,891.20
  6. Step 6: Final answer
    x = 25,797,171.60

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1.5x scale

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.