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Finding the Fourth Proportional to 53,989.22, 80,866.98 and 39,165.48

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Solution

The fourth proportional to 53,989.22, 80,866.98 and 39,165.48 is: 58,663.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    53,989.22 : 80,866.98 = 39,165.48 : x
  2. Step 2: Convert to fraction form
    53,989.22/80,866.98 = 39,165.48/x
  3. Step 3: Cross multiply
    53,989.22x = 80,866.98 × 39,165.48
  4. Step 4: Simplify right side
    53,989.22x = 3,167,194,087.85
  5. Step 5: Solve for x
    x = 3,167,194,087.85/53,989.22
  6. Step 6: Final answer
    x = 58,663.45

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.