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Finding the Fourth Proportional to 61,728.57, 92,053.29 and 54,924.57

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Solution

The fourth proportional to 61,728.57, 92,053.29 and 54,924.57 is: 81,906.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,728.57 : 92,053.29 = 54,924.57 : x
  2. Step 2: Convert to fraction form
    61,728.57/92,053.29 = 54,924.57/x
  3. Step 3: Cross multiply
    61,728.57x = 92,053.29 × 54,924.57
  4. Step 4: Simplify right side
    61,728.57x = 5,055,987,370.34
  5. Step 5: Solve for x
    x = 5,055,987,370.34/61,728.57
  6. Step 6: Final answer
    x = 81,906.76

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.