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Finding the Fourth Proportional to 61,911.71, 85,439.16 and 33,617.46

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Solution

The fourth proportional to 61,911.71, 85,439.16 and 33,617.46 is: 46,392.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,911.71 : 85,439.16 = 33,617.46 : x
  2. Step 2: Convert to fraction form
    61,911.71/85,439.16 = 33,617.46/x
  3. Step 3: Cross multiply
    61,911.71x = 85,439.16 × 33,617.46
  4. Step 4: Simplify right side
    61,911.71x = 2,872,247,543.73
  5. Step 5: Solve for x
    x = 2,872,247,543.73/61,911.71
  6. Step 6: Final answer
    x = 46,392.64

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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.