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Finding the Fourth Proportional to 541,406.20, 812,109.30 and 331,454.20

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Solution

The fourth proportional to 541,406.20, 812,109.30 and 331,454.20 is: 497,181.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,406.20 : 812,109.30 = 331,454.20 : x
  2. Step 2: Convert to fraction form
    541,406.20/812,109.30 = 331,454.20/x
  3. Step 3: Cross multiply
    541,406.20x = 812,109.30 × 331,454.20
  4. Step 4: Simplify right side
    541,406.20x = 269,177,038,344.06
  5. Step 5: Solve for x
    x = 269,177,038,344.06/541,406.20
  6. Step 6: Final answer
    x = 497,181.30

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Double scale
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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.