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Finding the Fourth Proportional to 79,729.40, 119,363.70 and 48,625.40

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Solution

The fourth proportional to 79,729.40, 119,363.70 and 48,625.40 is: 72,797.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,729.40 : 119,363.70 = 48,625.40 : x
  2. Step 2: Convert to fraction form
    79,729.40/119,363.70 = 48,625.40/x
  3. Step 3: Cross multiply
    79,729.40x = 119,363.70 × 48,625.40
  4. Step 4: Simplify right side
    79,729.40x = 5,804,107,657.98
  5. Step 5: Solve for x
    x = 5,804,107,657.98/79,729.40
  6. Step 6: Final answer
    x = 72,797.58

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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.