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Finding the Fourth Proportional to 541,685.80, 812,658.30 and 225,980.20

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Solution

The fourth proportional to 541,685.80, 812,658.30 and 225,980.20 is: 339,024.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,685.80 : 812,658.30 = 225,980.20 : x
  2. Step 2: Convert to fraction form
    541,685.80/812,658.30 = 225,980.20/x
  3. Step 3: Cross multiply
    541,685.80x = 812,658.30 × 225,980.20
  4. Step 4: Simplify right side
    541,685.80x = 183,644,685,165.66
  5. Step 5: Solve for x
    x = 183,644,685,165.66/541,685.80
  6. Step 6: Final answer
    x = 339,024.37

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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.