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Finding the Fourth Proportional to 89,172.99, 133,763.43 and 36,578.07

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Solution

The fourth proportional to 89,172.99, 133,763.43 and 36,578.07 is: 54,868.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,172.99 : 133,763.43 = 36,578.07 : x
  2. Step 2: Convert to fraction form
    89,172.99/133,763.43 = 36,578.07/x
  3. Step 3: Cross multiply
    89,172.99x = 133,763.43 × 36,578.07
  4. Step 4: Simplify right side
    89,172.99x = 4,892,808,105.98
  5. Step 5: Solve for x
    x = 4,892,808,105.98/89,172.99
  6. Step 6: Final answer
    x = 54,868.72

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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.