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Finding the Fourth Proportional to 216,121.06, 324,156.06 and 58,361.80

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Solution

The fourth proportional to 216,121.06, 324,156.06 and 58,361.80 is: 87,535.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,121.06 : 324,156.06 = 58,361.80 : x
  2. Step 2: Convert to fraction form
    216,121.06/324,156.06 = 58,361.80/x
  3. Step 3: Cross multiply
    216,121.06x = 324,156.06 × 58,361.80
  4. Step 4: Simplify right side
    216,121.06x = 18,918,331,142.51
  5. Step 5: Solve for x
    x = 18,918,331,142.51/216,121.06
  6. Step 6: Final answer
    x = 87,535.81

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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.