Home / 12,756,972.40-19,135,458.60-12,589,010.80

Finding the Fourth Proportional to 12,756,972.40, 19,135,458.60 and 12,589,010.80

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Solution

The fourth proportional to 12,756,972.40, 19,135,458.60 and 12,589,010.80 is: 18,883,516.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,756,972.40 : 19,135,458.60 = 12,589,010.80 : x
  2. Step 2: Convert to fraction form
    12,756,972.40/19,135,458.60 = 12,589,010.80/x
  3. Step 3: Cross multiply
    12,756,972.40x = 19,135,458.60 × 12,589,010.80
  4. Step 4: Simplify right side
    12,756,972.40x = 240,896,494,978,352.91
  5. Step 5: Solve for x
    x = 240,896,494,978,352.91/12,756,972.40
  6. Step 6: Final answer
    x = 18,883,516.20

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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.