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Finding the Fourth Proportional to 61,878.77, 85,392.79 and 33,584.46

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Solution

The fourth proportional to 61,878.77, 85,392.79 and 33,584.46 is: 46,346.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.77 : 85,392.79 = 33,584.46 : x
  2. Step 2: Convert to fraction form
    61,878.77/85,392.79 = 33,584.46/x
  3. Step 3: Cross multiply
    61,878.77x = 85,392.79 × 33,584.46
  4. Step 4: Simplify right side
    61,878.77x = 2,867,870,740.04
  5. Step 5: Solve for x
    x = 2,867,870,740.04/61,878.77
  6. Step 6: Final answer
    x = 46,346.60

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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.