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Finding the Fourth Proportional to 61,247.14, 84,540.86 and 39,698.86

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Solution

The fourth proportional to 61,247.14, 84,540.86 and 39,698.86 is: 54,797.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,247.14 : 84,540.86 = 39,698.86 : x
  2. Step 2: Convert to fraction form
    61,247.14/84,540.86 = 39,698.86/x
  3. Step 3: Cross multiply
    61,247.14x = 84,540.86 × 39,698.86
  4. Step 4: Simplify right side
    61,247.14x = 3,356,175,886.26
  5. Step 5: Solve for x
    x = 3,356,175,886.26/61,247.14
  6. Step 6: Final answer
    x = 54,797.27

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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.