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Finding the Fourth Proportional to 552,641.20, 828,961.80 and 178,664.20

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Solution

The fourth proportional to 552,641.20, 828,961.80 and 178,664.20 is: 267,996.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,641.20 : 828,961.80 = 178,664.20 : x
  2. Step 2: Convert to fraction form
    552,641.20/828,961.80 = 178,664.20/x
  3. Step 3: Cross multiply
    552,641.20x = 828,961.80 × 178,664.20
  4. Step 4: Simplify right side
    552,641.20x = 148,105,796,827.56
  5. Step 5: Solve for x
    x = 148,105,796,827.56/552,641.20
  6. Step 6: Final answer
    x = 267,996.30

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Similar ratio
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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.