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Finding the Fourth Proportional to 22,645.67, 33,956.03 and 12,128.01

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Solution

The fourth proportional to 22,645.67, 33,956.03 and 12,128.01 is: 18,185.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,645.67 : 33,956.03 = 12,128.01 : x
  2. Step 2: Convert to fraction form
    22,645.67/33,956.03 = 12,128.01/x
  3. Step 3: Cross multiply
    22,645.67x = 33,956.03 × 12,128.01
  4. Step 4: Simplify right side
    22,645.67x = 411,819,010.76
  5. Step 5: Solve for x
    x = 411,819,010.76/22,645.67
  6. Step 6: Final answer
    x = 18,185.34

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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.