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Finding the Fourth Proportional to 61,880.72, 85,393.10 and 33,585.80

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Solution

The fourth proportional to 61,880.72, 85,393.10 and 33,585.80 is: 46,347.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,880.72 : 85,393.10 = 33,585.80 : x
  2. Step 2: Convert to fraction form
    61,880.72/85,393.10 = 33,585.80/x
  3. Step 3: Cross multiply
    61,880.72x = 85,393.10 × 33,585.80
  4. Step 4: Simplify right side
    61,880.72x = 2,867,995,234.98
  5. Step 5: Solve for x
    x = 2,867,995,234.98/61,880.72
  6. Step 6: Final answer
    x = 46,347.16

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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.