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Finding the Fourth Proportional to 298,613.70, 447,920.55 and 132,401.70

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Solution

The fourth proportional to 298,613.70, 447,920.55 and 132,401.70 is: 198,602.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,613.70 : 447,920.55 = 132,401.70 : x
  2. Step 2: Convert to fraction form
    298,613.70/447,920.55 = 132,401.70/x
  3. Step 3: Cross multiply
    298,613.70x = 447,920.55 × 132,401.70
  4. Step 4: Simplify right side
    298,613.70x = 59,305,442,284.94
  5. Step 5: Solve for x
    x = 59,305,442,284.94/298,613.70
  6. Step 6: Final answer
    x = 198,602.55

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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.