Home / 445,514.80-668,272.20-129,930.70

Finding the Fourth Proportional to 445,514.80, 668,272.20 and 129,930.70

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Solution

The fourth proportional to 445,514.80, 668,272.20 and 129,930.70 is: 194,896.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,514.80 : 668,272.20 = 129,930.70 : x
  2. Step 2: Convert to fraction form
    445,514.80/668,272.20 = 129,930.70/x
  3. Step 3: Cross multiply
    445,514.80x = 668,272.20 × 129,930.70
  4. Step 4: Simplify right side
    445,514.80x = 86,829,074,736.54
  5. Step 5: Solve for x
    x = 86,829,074,736.54/445,514.80
  6. Step 6: Final answer
    x = 194,896.05

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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.