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Finding the Fourth Proportional to 173,318.40, 259,758.90 and 84,380.40

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Solution

The fourth proportional to 173,318.40, 259,758.90 and 84,380.40 is: 126,464.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,318.40 : 259,758.90 = 84,380.40 : x
  2. Step 2: Convert to fraction form
    173,318.40/259,758.90 = 84,380.40/x
  3. Step 3: Cross multiply
    173,318.40x = 259,758.90 × 84,380.40
  4. Step 4: Simplify right side
    173,318.40x = 21,918,559,885.56
  5. Step 5: Solve for x
    x = 21,918,559,885.56/173,318.40
  6. Step 6: Final answer
    x = 126,464.13

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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.