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Finding the Fourth Proportional to 61,173.99, 84,467.91 and 39,673.98

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Solution

The fourth proportional to 61,173.99, 84,467.91 and 39,673.98 is: 54,781.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,173.99 : 84,467.91 = 39,673.98 : x
  2. Step 2: Convert to fraction form
    61,173.99/84,467.91 = 39,673.98/x
  3. Step 3: Cross multiply
    61,173.99x = 84,467.91 × 39,673.98
  4. Step 4: Simplify right side
    61,173.99x = 3,351,178,171.98
  5. Step 5: Solve for x
    x = 3,351,178,171.98/61,173.99
  6. Step 6: Final answer
    x = 54,781.10

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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.