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Finding the Fourth Proportional to 173,087.40, 259,631.10 and 67,909.80

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Solution

The fourth proportional to 173,087.40, 259,631.10 and 67,909.80 is: 101,864.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,087.40 : 259,631.10 = 67,909.80 : x
  2. Step 2: Convert to fraction form
    173,087.40/259,631.10 = 67,909.80/x
  3. Step 3: Cross multiply
    173,087.40x = 259,631.10 × 67,909.80
  4. Step 4: Simplify right side
    173,087.40x = 17,631,496,074.78
  5. Step 5: Solve for x
    x = 17,631,496,074.78/173,087.40
  6. Step 6: Final answer
    x = 101,864.70

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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.