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Finding the Fourth Proportional to 399,161.54, 550,829.22 and 237,933.47

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Solution

The fourth proportional to 399,161.54, 550,829.22 and 237,933.47 is: 328,340.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,161.54 : 550,829.22 = 237,933.47 : x
  2. Step 2: Convert to fraction form
    399,161.54/550,829.22 = 237,933.47/x
  3. Step 3: Cross multiply
    399,161.54x = 550,829.22 × 237,933.47
  4. Step 4: Simplify right side
    399,161.54x = 131,060,707,691.99
  5. Step 5: Solve for x
    x = 131,060,707,691.99/399,161.54
  6. Step 6: Final answer
    x = 328,340.02

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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.