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Finding the Fourth Proportional to 71,866.66, 99,174.75 and 41,654.80

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Solution

The fourth proportional to 71,866.66, 99,174.75 and 41,654.80 is: 57,482.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,866.66 : 99,174.75 = 41,654.80 : x
  2. Step 2: Convert to fraction form
    71,866.66/99,174.75 = 41,654.80/x
  3. Step 3: Cross multiply
    71,866.66x = 99,174.75 × 41,654.80
  4. Step 4: Simplify right side
    71,866.66x = 4,131,103,802.32
  5. Step 5: Solve for x
    x = 4,131,103,802.32/71,866.66
  6. Step 6: Final answer
    x = 57,482.89

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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.