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Finding the Fourth Proportional to 208,768.74, 313,163.64 and 59,019.78

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Solution

The fourth proportional to 208,768.74, 313,163.64 and 59,019.78 is: 88,532.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,768.74 : 313,163.64 = 59,019.78 : x
  2. Step 2: Convert to fraction form
    208,768.74/313,163.64 = 59,019.78/x
  3. Step 3: Cross multiply
    208,768.74x = 313,163.64 × 59,019.78
  4. Step 4: Simplify right side
    208,768.74x = 18,482,849,136.80
  5. Step 5: Solve for x
    x = 18,482,849,136.80/208,768.74
  6. Step 6: Final answer
    x = 88,532.65

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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.