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Finding the Fourth Proportional to 64,864.73, 89,515.87 and 36,569.81

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Solution

The fourth proportional to 64,864.73, 89,515.87 and 36,569.81 is: 50,467.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,864.73 : 89,515.87 = 36,569.81 : x
  2. Step 2: Convert to fraction form
    64,864.73/89,515.87 = 36,569.81/x
  3. Step 3: Cross multiply
    64,864.73x = 89,515.87 × 36,569.81
  4. Step 4: Simplify right side
    64,864.73x = 3,273,578,490.25
  5. Step 5: Solve for x
    x = 3,273,578,490.25/64,864.73
  6. Step 6: Final answer
    x = 50,467.77

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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.