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Finding the Fourth Proportional to 61,669.80, 92,504.70 and 36,721.80

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Solution

The fourth proportional to 61,669.80, 92,504.70 and 36,721.80 is: 55,082.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,669.80 : 92,504.70 = 36,721.80 : x
  2. Step 2: Convert to fraction form
    61,669.80/92,504.70 = 36,721.80/x
  3. Step 3: Cross multiply
    61,669.80x = 92,504.70 × 36,721.80
  4. Step 4: Simplify right side
    61,669.80x = 3,396,939,092.46
  5. Step 5: Solve for x
    x = 3,396,939,092.46/61,669.80
  6. Step 6: Final answer
    x = 55,082.70

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.