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Finding the Fourth Proportional to 99,398.59, 149,046.81 and 29,268.79

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Solution

The fourth proportional to 99,398.59, 149,046.81 and 29,268.79 is: 43,888.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,398.59 : 149,046.81 = 29,268.79 : x
  2. Step 2: Convert to fraction form
    99,398.59/149,046.81 = 29,268.79/x
  3. Step 3: Cross multiply
    99,398.59x = 149,046.81 × 29,268.79
  4. Step 4: Simplify right side
    99,398.59x = 4,362,419,299.68
  5. Step 5: Solve for x
    x = 4,362,419,299.68/99,398.59
  6. Step 6: Final answer
    x = 43,888.14

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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.