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Finding the Fourth Proportional to 353,119.52, 487,294.79 and 200,171.85

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Solution

The fourth proportional to 353,119.52, 487,294.79 and 200,171.85 is: 276,231.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,119.52 : 487,294.79 = 200,171.85 : x
  2. Step 2: Convert to fraction form
    353,119.52/487,294.79 = 200,171.85/x
  3. Step 3: Cross multiply
    353,119.52x = 487,294.79 × 200,171.85
  4. Step 4: Simplify right side
    353,119.52x = 97,542,698,608.80
  5. Step 5: Solve for x
    x = 97,542,698,608.80/353,119.52
  6. Step 6: Final answer
    x = 276,231.40

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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.