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Finding the Fourth Proportional to 376,528.47, 519,612.90 and 206,766.15

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Solution

The fourth proportional to 376,528.47, 519,612.90 and 206,766.15 is: 285,339.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,528.47 : 519,612.90 = 206,766.15 : x
  2. Step 2: Convert to fraction form
    376,528.47/519,612.90 = 206,766.15/x
  3. Step 3: Cross multiply
    376,528.47x = 519,612.90 × 206,766.15
  4. Step 4: Simplify right side
    376,528.47x = 107,438,355,191.44
  5. Step 5: Solve for x
    x = 107,438,355,191.44/376,528.47
  6. Step 6: Final answer
    x = 285,339.26

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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.