Home / 18,568,081.20-27,852,121.80-7,781,797.20

Finding the Fourth Proportional to 18,568,081.20, 27,852,121.80 and 7,781,797.20

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Solution

The fourth proportional to 18,568,081.20, 27,852,121.80 and 7,781,797.20 is: 11,672,695.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,568,081.20 : 27,852,121.80 = 7,781,797.20 : x
  2. Step 2: Convert to fraction form
    18,568,081.20/27,852,121.80 = 7,781,797.20/x
  3. Step 3: Cross multiply
    18,568,081.20x = 27,852,121.80 × 7,781,797.20
  4. Step 4: Simplify right side
    18,568,081.20x = 216,739,563,437,298.97
  5. Step 5: Solve for x
    x = 216,739,563,437,298.97/18,568,081.20
  6. Step 6: Final answer
    x = 11,672,695.80

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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.