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Finding the Fourth Proportional to 61,805.80, 92,651.10 and 43,085.80

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Solution

The fourth proportional to 61,805.80, 92,651.10 and 43,085.80 is: 64,588.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,805.80 : 92,651.10 = 43,085.80 : x
  2. Step 2: Convert to fraction form
    61,805.80/92,651.10 = 43,085.80/x
  3. Step 3: Cross multiply
    61,805.80x = 92,651.10 × 43,085.80
  4. Step 4: Simplify right side
    61,805.80x = 3,991,946,764.38
  5. Step 5: Solve for x
    x = 3,991,946,764.38/61,805.80
  6. Step 6: Final answer
    x = 64,588.55

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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.