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Finding the Fourth Proportional to 61,843.88, 92,642.16 and 28,518.32

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Solution

The fourth proportional to 61,843.88, 92,642.16 and 28,518.32 is: 42,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,843.88 : 92,642.16 = 28,518.32 : x
  2. Step 2: Convert to fraction form
    61,843.88/92,642.16 = 28,518.32/x
  3. Step 3: Cross multiply
    61,843.88x = 92,642.16 × 28,518.32
  4. Step 4: Simplify right side
    61,843.88x = 2,641,998,764.37
  5. Step 5: Solve for x
    x = 2,641,998,764.37/61,843.88
  6. Step 6: Final answer
    x = 42,720.46

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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.