Home / 412,131.27-618,114.89-112,540.63

Finding the Fourth Proportional to 412,131.27, 618,114.89 and 112,540.63

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Solution

The fourth proportional to 412,131.27, 618,114.89 and 112,540.63 is: 168,788.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    412,131.27 : 618,114.89 = 112,540.63 : x
  2. Step 2: Convert to fraction form
    412,131.27/618,114.89 = 112,540.63/x
  3. Step 3: Cross multiply
    412,131.27x = 618,114.89 × 112,540.63
  4. Step 4: Simplify right side
    412,131.27x = 69,563,037,367.49
  5. Step 5: Solve for x
    x = 69,563,037,367.49/412,131.27
  6. Step 6: Final answer
    x = 168,788.55

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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.