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Finding the Fourth Proportional to 71,980.22, 107,985.80 and 22,063.76

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Solution

The fourth proportional to 71,980.22, 107,985.80 and 22,063.76 is: 33,100.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,980.22 : 107,985.80 = 22,063.76 : x
  2. Step 2: Convert to fraction form
    71,980.22/107,985.80 = 22,063.76/x
  3. Step 3: Cross multiply
    71,980.22x = 107,985.80 × 22,063.76
  4. Step 4: Simplify right side
    71,980.22x = 2,382,572,774.61
  5. Step 5: Solve for x
    x = 2,382,572,774.61/71,980.22
  6. Step 6: Final answer
    x = 33,100.38

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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.