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Finding the Fourth Proportional to 64,812.72, 89,450.82 and 36,521.04

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Solution

The fourth proportional to 64,812.72, 89,450.82 and 36,521.04 is: 50,404.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,812.72 : 89,450.82 = 36,521.04 : x
  2. Step 2: Convert to fraction form
    64,812.72/89,450.82 = 36,521.04/x
  3. Step 3: Cross multiply
    64,812.72x = 89,450.82 × 36,521.04
  4. Step 4: Simplify right side
    64,812.72x = 3,266,836,975.25
  5. Step 5: Solve for x
    x = 3,266,836,975.25/64,812.72
  6. Step 6: Final answer
    x = 50,404.26

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.