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Finding the Fourth Proportional to 61,561.52, 92,351.16 and 19,427.28

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Solution

The fourth proportional to 61,561.52, 92,351.16 and 19,427.28 is: 29,143.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,561.52 : 92,351.16 = 19,427.28 : x
  2. Step 2: Convert to fraction form
    61,561.52/92,351.16 = 19,427.28/x
  3. Step 3: Cross multiply
    61,561.52x = 92,351.16 × 19,427.28
  4. Step 4: Simplify right side
    61,561.52x = 1,794,131,843.64
  5. Step 5: Solve for x
    x = 1,794,131,843.64/61,561.52
  6. Step 6: Final answer
    x = 29,143.72

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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.