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Finding the Fourth Proportional to 620,613.57, 930,850.64 and 171,398.30

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Solution

The fourth proportional to 620,613.57, 930,850.64 and 171,398.30 is: 257,078.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,613.57 : 930,850.64 = 171,398.30 : x
  2. Step 2: Convert to fraction form
    620,613.57/930,850.64 = 171,398.30/x
  3. Step 3: Cross multiply
    620,613.57x = 930,850.64 × 171,398.30
  4. Step 4: Simplify right side
    620,613.57x = 159,546,215,351.28
  5. Step 5: Solve for x
    x = 159,546,215,351.28/620,613.57
  6. Step 6: Final answer
    x = 257,078.20

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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.