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Finding the Fourth Proportional to 373,998.62, 515,856.12 and 253,086.68

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Solution

The fourth proportional to 373,998.62, 515,856.12 and 253,086.68 is: 349,082.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,998.62 : 515,856.12 = 253,086.68 : x
  2. Step 2: Convert to fraction form
    373,998.62/515,856.12 = 253,086.68/x
  3. Step 3: Cross multiply
    373,998.62x = 515,856.12 × 253,086.68
  4. Step 4: Simplify right side
    373,998.62x = 130,556,312,768.48
  5. Step 5: Solve for x
    x = 130,556,312,768.48/373,998.62
  6. Step 6: Final answer
    x = 349,082.34

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.