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Finding the Fourth Proportional to 411,207.20, 616,234.80 and 327,111.20

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Solution

The fourth proportional to 411,207.20, 616,234.80 and 327,111.20 is: 490,208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,207.20 : 616,234.80 = 327,111.20 : x
  2. Step 2: Convert to fraction form
    411,207.20/616,234.80 = 327,111.20/x
  3. Step 3: Cross multiply
    411,207.20x = 616,234.80 × 327,111.20
  4. Step 4: Simplify right side
    411,207.20x = 201,577,304,909.76
  5. Step 5: Solve for x
    x = 201,577,304,909.76/411,207.20
  6. Step 6: Final answer
    x = 490,208.60

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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.