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Finding the Fourth Proportional to 262,053.40, 392,496.90 and 256,221.40

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Solution

The fourth proportional to 262,053.40, 392,496.90 and 256,221.40 is: 383,761.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    262,053.40 : 392,496.90 = 256,221.40 : x
  2. Step 2: Convert to fraction form
    262,053.40/392,496.90 = 256,221.40/x
  3. Step 3: Cross multiply
    262,053.40x = 392,496.90 × 256,221.40
  4. Step 4: Simplify right side
    262,053.40x = 100,566,105,213.66
  5. Step 5: Solve for x
    x = 100,566,105,213.66/262,053.40
  6. Step 6: Final answer
    x = 383,761.88

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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.