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Finding the Fourth Proportional to 61,974.48, 85,525.20 and 33,680.64

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Solution

The fourth proportional to 61,974.48, 85,525.20 and 33,680.64 is: 46,479.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,974.48 : 85,525.20 = 33,680.64 : x
  2. Step 2: Convert to fraction form
    61,974.48/85,525.20 = 33,680.64/x
  3. Step 3: Cross multiply
    61,974.48x = 85,525.20 × 33,680.64
  4. Step 4: Simplify right side
    61,974.48x = 2,880,543,472.13
  5. Step 5: Solve for x
    x = 2,880,543,472.13/61,974.48
  6. Step 6: Final answer
    x = 46,479.51

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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.