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Finding the Fourth Proportional to 663,593.21, 995,386.71 and 208,217.78

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Solution

The fourth proportional to 663,593.21, 995,386.71 and 208,217.78 is: 312,325.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,593.21 : 995,386.71 = 208,217.78 : x
  2. Step 2: Convert to fraction form
    663,593.21/995,386.71 = 208,217.78/x
  3. Step 3: Cross multiply
    663,593.21x = 995,386.71 × 208,217.78
  4. Step 4: Simplify right side
    663,593.21x = 207,257,206,020.77
  5. Step 5: Solve for x
    x = 207,257,206,020.77/663,593.21
  6. Step 6: Final answer
    x = 312,325.69

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Similar ratio
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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.