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Finding the Fourth Proportional to 89,224.20, 133,722.90 and 36,574.20

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Solution

The fourth proportional to 89,224.20, 133,722.90 and 36,574.20 is: 54,814.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,224.20 : 133,722.90 = 36,574.20 : x
  2. Step 2: Convert to fraction form
    89,224.20/133,722.90 = 36,574.20/x
  3. Step 3: Cross multiply
    89,224.20x = 133,722.90 × 36,574.20
  4. Step 4: Simplify right side
    89,224.20x = 4,890,808,089.18
  5. Step 5: Solve for x
    x = 4,890,808,089.18/89,224.20
  6. Step 6: Final answer
    x = 54,814.82

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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.