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Finding the Fourth Proportional to 541,720.60, 812,580.90 and 261,784.60

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Solution

The fourth proportional to 541,720.60, 812,580.90 and 261,784.60 is: 392,676.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,720.60 : 812,580.90 = 261,784.60 : x
  2. Step 2: Convert to fraction form
    541,720.60/812,580.90 = 261,784.60/x
  3. Step 3: Cross multiply
    541,720.60x = 812,580.90 × 261,784.60
  4. Step 4: Simplify right side
    541,720.60x = 212,721,165,874.14
  5. Step 5: Solve for x
    x = 212,721,165,874.14/541,720.60
  6. Step 6: Final answer
    x = 392,676.90

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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.