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Finding the Fourth Proportional to 625,208.34, 862,787.31 and 338,728.42

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Solution

The fourth proportional to 625,208.34, 862,787.31 and 338,728.42 is: 467,445.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,208.34 : 862,787.31 = 338,728.42 : x
  2. Step 2: Convert to fraction form
    625,208.34/862,787.31 = 338,728.42/x
  3. Step 3: Cross multiply
    625,208.34x = 862,787.31 × 338,728.42
  4. Step 4: Simplify right side
    625,208.34x = 292,250,582,312.35
  5. Step 5: Solve for x
    x = 292,250,582,312.35/625,208.34
  6. Step 6: Final answer
    x = 467,445.11

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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.