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Finding the Fourth Proportional to 71,858.85, 99,174.47 and 41,243.97

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Solution

The fourth proportional to 71,858.85, 99,174.47 and 41,243.97 is: 56,921.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,858.85 : 99,174.47 = 41,243.97 : x
  2. Step 2: Convert to fraction form
    71,858.85/99,174.47 = 41,243.97/x
  3. Step 3: Cross multiply
    71,858.85x = 99,174.47 × 41,243.97
  4. Step 4: Simplify right side
    71,858.85x = 4,090,348,659.23
  5. Step 5: Solve for x
    x = 4,090,348,659.23/71,858.85
  6. Step 6: Final answer
    x = 56,921.99

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1.5x scale

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.