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Finding the Fourth Proportional to 664,380.60, 996,408.90 and 191,016.60

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Solution

The fourth proportional to 664,380.60, 996,408.90 and 191,016.60 is: 286,478.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,380.60 : 996,408.90 = 191,016.60 : x
  2. Step 2: Convert to fraction form
    664,380.60/996,408.90 = 191,016.60/x
  3. Step 3: Cross multiply
    664,380.60x = 996,408.90 × 191,016.60
  4. Step 4: Simplify right side
    664,380.60x = 190,330,640,287.74
  5. Step 5: Solve for x
    x = 190,330,640,287.74/664,380.60
  6. Step 6: Final answer
    x = 286,478.32

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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.