Home / 12,945,179.57-17,864,311.10-7,143,919.80

Finding the Fourth Proportional to 12,945,179.57, 17,864,311.10 and 7,143,919.80

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Solution

The fourth proportional to 12,945,179.57, 17,864,311.10 and 7,143,919.80 is: 9,858,589.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,945,179.57 : 17,864,311.10 = 7,143,919.80 : x
  2. Step 2: Convert to fraction form
    12,945,179.57/17,864,311.10 = 7,143,919.80/x
  3. Step 3: Cross multiply
    12,945,179.57x = 17,864,311.10 × 7,143,919.80
  4. Step 4: Simplify right side
    12,945,179.57x = 127,621,205,744,930.17
  5. Step 5: Solve for x
    x = 127,621,205,744,930.17/12,945,179.57
  6. Step 6: Final answer
    x = 9,858,589.07

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1.5x scale

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.