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Finding the Fourth Proportional to 64,759.64, 89,369.82 and 36,081.23

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Solution

The fourth proportional to 64,759.64, 89,369.82 and 36,081.23 is: 49,792.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,759.64 : 89,369.82 = 36,081.23 : x
  2. Step 2: Convert to fraction form
    64,759.64/89,369.82 = 36,081.23/x
  3. Step 3: Cross multiply
    64,759.64x = 89,369.82 × 36,081.23
  4. Step 4: Simplify right side
    64,759.64x = 3,224,572,583.63
  5. Step 5: Solve for x
    x = 3,224,572,583.63/64,759.64
  6. Step 6: Final answer
    x = 49,792.94

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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.