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Finding the Fourth Proportional to 61,878.67, 85,392.80 and 33,584.36

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Solution

The fourth proportional to 61,878.67, 85,392.80 and 33,584.36 is: 46,346.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.67 : 85,392.80 = 33,584.36 : x
  2. Step 2: Convert to fraction form
    61,878.67/85,392.80 = 33,584.36/x
  3. Step 3: Cross multiply
    61,878.67x = 85,392.80 × 33,584.36
  4. Step 4: Simplify right side
    61,878.67x = 2,867,862,536.61
  5. Step 5: Solve for x
    x = 2,867,862,536.61/61,878.67
  6. Step 6: Final answer
    x = 46,346.54

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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.