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Finding the Fourth Proportional to 99,363.44, 149,069.52 and 81,624.08

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Solution

The fourth proportional to 99,363.44, 149,069.52 and 81,624.08 is: 122,456.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,363.44 : 149,069.52 = 81,624.08 : x
  2. Step 2: Convert to fraction form
    99,363.44/149,069.52 = 81,624.08/x
  3. Step 3: Cross multiply
    99,363.44x = 149,069.52 × 81,624.08
  4. Step 4: Simplify right side
    99,363.44x = 12,167,662,426.04
  5. Step 5: Solve for x
    x = 12,167,662,426.04/99,363.44
  6. Step 6: Final answer
    x = 122,456.13

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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.