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Finding the Fourth Proportional to 65,858.15, 90,862.80 and 41,992.52

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Solution

The fourth proportional to 65,858.15, 90,862.80 and 41,992.52 is: 57,936.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,858.15 : 90,862.80 = 41,992.52 : x
  2. Step 2: Convert to fraction form
    65,858.15/90,862.80 = 41,992.52/x
  3. Step 3: Cross multiply
    65,858.15x = 90,862.80 × 41,992.52
  4. Step 4: Simplify right side
    65,858.15x = 3,815,557,491.94
  5. Step 5: Solve for x
    x = 3,815,557,491.94/65,858.15
  6. Step 6: Final answer
    x = 57,936.00

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.