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Finding the Fourth Proportional to 541,010.60, 811,515.90 and 203,999.40

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Solution

The fourth proportional to 541,010.60, 811,515.90 and 203,999.40 is: 305,999.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,010.60 : 811,515.90 = 203,999.40 : x
  2. Step 2: Convert to fraction form
    541,010.60/811,515.90 = 203,999.40/x
  3. Step 3: Cross multiply
    541,010.60x = 811,515.90 × 203,999.40
  4. Step 4: Simplify right side
    541,010.60x = 165,548,756,690.46
  5. Step 5: Solve for x
    x = 165,548,756,690.46/541,010.60
  6. Step 6: Final answer
    x = 305,999.10

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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.