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Finding the Fourth Proportional to 22,691.39, 34,040.72 and 7,904.51

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Solution

The fourth proportional to 22,691.39, 34,040.72 and 7,904.51 is: 11,858.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,691.39 : 34,040.72 = 7,904.51 : x
  2. Step 2: Convert to fraction form
    22,691.39/34,040.72 = 7,904.51/x
  3. Step 3: Cross multiply
    22,691.39x = 34,040.72 × 7,904.51
  4. Step 4: Simplify right side
    22,691.39x = 269,075,001.92
  5. Step 5: Solve for x
    x = 269,075,001.92/22,691.39
  6. Step 6: Final answer
    x = 11,858.02

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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.