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Finding the Fourth Proportional to 665,015.60, 996,867.30 and 327,780.20

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Solution

The fourth proportional to 665,015.60, 996,867.30 and 327,780.20 is: 491,346.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,015.60 : 996,867.30 = 327,780.20 : x
  2. Step 2: Convert to fraction form
    665,015.60/996,867.30 = 327,780.20/x
  3. Step 3: Cross multiply
    665,015.60x = 996,867.30 × 327,780.20
  4. Step 4: Simplify right side
    665,015.60x = 326,753,362,967.46
  5. Step 5: Solve for x
    x = 326,753,362,967.46/665,015.60
  6. Step 6: Final answer
    x = 491,346.91

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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.