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Finding the Fourth Proportional to 8,493.79, 11,721.41 and 4,956.32

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Solution

The fourth proportional to 8,493.79, 11,721.41 and 4,956.32 is: 6,839.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,493.79 : 11,721.41 = 4,956.32 : x
  2. Step 2: Convert to fraction form
    8,493.79/11,721.41 = 4,956.32/x
  3. Step 3: Cross multiply
    8,493.79x = 11,721.41 × 4,956.32
  4. Step 4: Simplify right side
    8,493.79x = 58,095,058.81
  5. Step 5: Solve for x
    x = 58,095,058.81/8,493.79
  6. Step 6: Final answer
    x = 6,839.71

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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.