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Finding the Fourth Proportional to 64,506.03, 89,018.31 and 36,211.69

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Solution

The fourth proportional to 64,506.03, 89,018.31 and 36,211.69 is: 49,972.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,506.03 : 89,018.31 = 36,211.69 : x
  2. Step 2: Convert to fraction form
    64,506.03/89,018.31 = 36,211.69/x
  3. Step 3: Cross multiply
    64,506.03x = 89,018.31 × 36,211.69
  4. Step 4: Simplify right side
    64,506.03x = 3,223,503,446.04
  5. Step 5: Solve for x
    x = 3,223,503,446.04/64,506.03
  6. Step 6: Final answer
    x = 49,972.13

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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.