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Finding the Fourth Proportional to 397,686.47, 548,625.84 and 236,449.76

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Solution

The fourth proportional to 397,686.47, 548,625.84 and 236,449.76 is: 326,192.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,686.47 : 548,625.84 = 236,449.76 : x
  2. Step 2: Convert to fraction form
    397,686.47/548,625.84 = 236,449.76/x
  3. Step 3: Cross multiply
    397,686.47x = 548,625.84 × 236,449.76
  4. Step 4: Simplify right side
    397,686.47x = 129,722,448,197.80
  5. Step 5: Solve for x
    x = 129,722,448,197.80/397,686.47
  6. Step 6: Final answer
    x = 326,192.76

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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.