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Finding the Fourth Proportional to 665,113.30, 996,989.55 and 327,634.90

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Solution

The fourth proportional to 665,113.30, 996,989.55 and 327,634.90 is: 491,117.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,113.30 : 996,989.55 = 327,634.90 : x
  2. Step 2: Convert to fraction form
    665,113.30/996,989.55 = 327,634.90/x
  3. Step 3: Cross multiply
    665,113.30x = 996,989.55 × 327,634.90
  4. Step 4: Simplify right side
    665,113.30x = 326,648,571,515.30
  5. Step 5: Solve for x
    x = 326,648,571,515.30/665,113.30
  6. Step 6: Final answer
    x = 491,117.18

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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.