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Finding the Fourth Proportional to 216,431.67, 324,647.50 and 58,660.12

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Solution

The fourth proportional to 216,431.67, 324,647.50 and 58,660.12 is: 87,990.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,431.67 : 324,647.50 = 58,660.12 : x
  2. Step 2: Convert to fraction form
    216,431.67/324,647.50 = 58,660.12/x
  3. Step 3: Cross multiply
    216,431.67x = 324,647.50 × 58,660.12
  4. Step 4: Simplify right side
    216,431.67x = 19,043,861,786.83
  5. Step 5: Solve for x
    x = 19,043,861,786.83/216,431.67
  6. Step 6: Final answer
    x = 87,990.18

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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.