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Finding the Fourth Proportional to 664,991.60, 996,831.30 and 327,756.20

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Solution

The fourth proportional to 664,991.60, 996,831.30 and 327,756.20 is: 491,310.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,991.60 : 996,831.30 = 327,756.20 : x
  2. Step 2: Convert to fraction form
    664,991.60/996,831.30 = 327,756.20/x
  3. Step 3: Cross multiply
    664,991.60x = 996,831.30 × 327,756.20
  4. Step 4: Simplify right side
    664,991.60x = 326,717,638,929.06
  5. Step 5: Solve for x
    x = 326,717,638,929.06/664,991.60
  6. Step 6: Final answer
    x = 491,310.93

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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.