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Finding the Fourth Proportional to 541,272.30, 811,908.45 and 260,817.90

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Solution

The fourth proportional to 541,272.30, 811,908.45 and 260,817.90 is: 391,226.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,272.30 : 811,908.45 = 260,817.90 : x
  2. Step 2: Convert to fraction form
    541,272.30/811,908.45 = 260,817.90/x
  3. Step 3: Cross multiply
    541,272.30x = 811,908.45 × 260,817.90
  4. Step 4: Simplify right side
    541,272.30x = 211,760,256,921.26
  5. Step 5: Solve for x
    x = 211,760,256,921.26/541,272.30
  6. Step 6: Final answer
    x = 391,226.85

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Similar ratio
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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.