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Finding the Fourth Proportional to 71,363.50, 98,481.63 and 43,069.20

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Solution

The fourth proportional to 71,363.50, 98,481.63 and 43,069.20 is: 59,435.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,363.50 : 98,481.63 = 43,069.20 : x
  2. Step 2: Convert to fraction form
    71,363.50/98,481.63 = 43,069.20/x
  3. Step 3: Cross multiply
    71,363.50x = 98,481.63 × 43,069.20
  4. Step 4: Simplify right side
    71,363.50x = 4,241,525,018.80
  5. Step 5: Solve for x
    x = 4,241,525,018.80/71,363.50
  6. Step 6: Final answer
    x = 59,435.50

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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.