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Finding the Fourth Proportional to 71,858.48, 107,721.27 and 36,720.68

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Solution

The fourth proportional to 71,858.48, 107,721.27 and 36,720.68 is: 55,047.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,858.48 : 107,721.27 = 36,720.68 : x
  2. Step 2: Convert to fraction form
    71,858.48/107,721.27 = 36,720.68/x
  3. Step 3: Cross multiply
    71,858.48x = 107,721.27 × 36,720.68
  4. Step 4: Simplify right side
    71,858.48x = 3,955,597,746.26
  5. Step 5: Solve for x
    x = 3,955,597,746.26/71,858.48
  6. Step 6: Final answer
    x = 55,047.06

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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.