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Finding the Fourth Proportional to 85,991.29, 118,663.99 and 47,753.27

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Solution

The fourth proportional to 85,991.29, 118,663.99 and 47,753.27 is: 65,897.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,991.29 : 118,663.99 = 47,753.27 : x
  2. Step 2: Convert to fraction form
    85,991.29/118,663.99 = 47,753.27/x
  3. Step 3: Cross multiply
    85,991.29x = 118,663.99 × 47,753.27
  4. Step 4: Simplify right side
    85,991.29x = 5,666,593,020.12
  5. Step 5: Solve for x
    x = 5,666,593,020.12/85,991.29
  6. Step 6: Final answer
    x = 65,897.29

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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.