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Finding the Fourth Proportional to 61,163.48, 84,453.36 and 39,663.56

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Solution

The fourth proportional to 61,163.48, 84,453.36 and 39,663.56 is: 54,766.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,163.48 : 84,453.36 = 39,663.56 : x
  2. Step 2: Convert to fraction form
    61,163.48/84,453.36 = 39,663.56/x
  3. Step 3: Cross multiply
    61,163.48x = 84,453.36 × 39,663.56
  4. Step 4: Simplify right side
    61,163.48x = 3,349,720,911.56
  5. Step 5: Solve for x
    x = 3,349,720,911.56/61,163.48
  6. Step 6: Final answer
    x = 54,766.68

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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.