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Finding the Fourth Proportional to 61,878.70, 85,392.09 and 33,584.38

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Solution

The fourth proportional to 61,878.70, 85,392.09 and 33,584.38 is: 46,346.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,878.70 : 85,392.09 = 33,584.38 : x
  2. Step 2: Convert to fraction form
    61,878.70/85,392.09 = 33,584.38/x
  3. Step 3: Cross multiply
    61,878.70x = 85,392.09 × 33,584.38
  4. Step 4: Simplify right side
    61,878.70x = 2,867,840,399.55
  5. Step 5: Solve for x
    x = 2,867,840,399.55/61,878.70
  6. Step 6: Final answer
    x = 46,346.16

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1.5x scale

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.