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Finding the Fourth Proportional to 541,753.90, 812,760.45 and 261,040.30

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Solution

The fourth proportional to 541,753.90, 812,760.45 and 261,040.30 is: 391,622.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,753.90 : 812,760.45 = 261,040.30 : x
  2. Step 2: Convert to fraction form
    541,753.90/812,760.45 = 261,040.30/x
  3. Step 3: Cross multiply
    541,753.90x = 812,760.45 × 261,040.30
  4. Step 4: Simplify right side
    541,753.90x = 212,163,231,696.14
  5. Step 5: Solve for x
    x = 212,163,231,696.14/541,753.90
  6. Step 6: Final answer
    x = 391,622.90

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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.