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Finding the Fourth Proportional to 216,601.60, 324,924.11 and 74,428.15

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Solution

The fourth proportional to 216,601.60, 324,924.11 and 74,428.15 is: 111,649.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,601.60 : 324,924.11 = 74,428.15 : x
  2. Step 2: Convert to fraction form
    216,601.60/324,924.11 = 74,428.15/x
  3. Step 3: Cross multiply
    216,601.60x = 324,924.11 × 74,428.15
  4. Step 4: Simplify right side
    216,601.60x = 24,183,500,397.70
  5. Step 5: Solve for x
    x = 24,183,500,397.70/216,601.60
  6. Step 6: Final answer
    x = 111,649.68

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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.