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Finding the Fourth Proportional to 71,553.47, 107,203.91 and 43,416.41

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Solution

The fourth proportional to 71,553.47, 107,203.91 and 43,416.41 is: 65,047.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,553.47 : 107,203.91 = 43,416.41 : x
  2. Step 2: Convert to fraction form
    71,553.47/107,203.91 = 43,416.41/x
  3. Step 3: Cross multiply
    71,553.47x = 107,203.91 × 43,416.41
  4. Step 4: Simplify right side
    71,553.47x = 4,654,408,157.06
  5. Step 5: Solve for x
    x = 4,654,408,157.06/71,553.47
  6. Step 6: Final answer
    x = 65,047.98

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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.