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Finding the Fourth Proportional to 541,415.70, 812,123.55 and 275,695.20

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Solution

The fourth proportional to 541,415.70, 812,123.55 and 275,695.20 is: 413,542.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,415.70 : 812,123.55 = 275,695.20 : x
  2. Step 2: Convert to fraction form
    541,415.70/812,123.55 = 275,695.20/x
  3. Step 3: Cross multiply
    541,415.70x = 812,123.55 × 275,695.20
  4. Step 4: Simplify right side
    541,415.70x = 223,898,564,541.96
  5. Step 5: Solve for x
    x = 223,898,564,541.96/541,415.70
  6. Step 6: Final answer
    x = 413,542.80

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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.