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Finding the Fourth Proportional to 61,136.85, 84,372.89 and 34,281.08

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Solution

The fourth proportional to 61,136.85, 84,372.89 and 34,281.08 is: 47,310.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,136.85 : 84,372.89 = 34,281.08 : x
  2. Step 2: Convert to fraction form
    61,136.85/84,372.89 = 34,281.08/x
  3. Step 3: Cross multiply
    61,136.85x = 84,372.89 × 34,281.08
  4. Step 4: Simplify right side
    61,136.85x = 2,892,393,198.65
  5. Step 5: Solve for x
    x = 2,892,393,198.65/61,136.85
  6. Step 6: Final answer
    x = 47,310.14

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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.