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Finding the Fourth Proportional to 29,660.88, 44,507.78 and 12,143.01

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Solution

The fourth proportional to 29,660.88, 44,507.78 and 12,143.01 is: 18,221.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    29,660.88 : 44,507.78 = 12,143.01 : x
  2. Step 2: Convert to fraction form
    29,660.88/44,507.78 = 12,143.01/x
  3. Step 3: Cross multiply
    29,660.88x = 44,507.78 × 12,143.01
  4. Step 4: Simplify right side
    29,660.88x = 540,458,569.34
  5. Step 5: Solve for x
    x = 540,458,569.34/29,660.88
  6. Step 6: Final answer
    x = 18,221.26

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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.