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Finding the Fourth Proportional to 392,127.54, 541,053.18 and 256,360.20

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Solution

The fourth proportional to 392,127.54, 541,053.18 and 256,360.20 is: 353,722.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,127.54 : 541,053.18 = 256,360.20 : x
  2. Step 2: Convert to fraction form
    392,127.54/541,053.18 = 256,360.20/x
  3. Step 3: Cross multiply
    392,127.54x = 541,053.18 × 256,360.20
  4. Step 4: Simplify right side
    392,127.54x = 138,704,501,435.44
  5. Step 5: Solve for x
    x = 138,704,501,435.44/392,127.54
  6. Step 6: Final answer
    x = 353,722.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.