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Finding the Fourth Proportional to 8,392.66, 11,581.68 and 4,615.90

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Solution

The fourth proportional to 8,392.66, 11,581.68 and 4,615.90 is: 6,369.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,392.66 : 11,581.68 = 4,615.90 : x
  2. Step 2: Convert to fraction form
    8,392.66/11,581.68 = 4,615.90/x
  3. Step 3: Cross multiply
    8,392.66x = 11,581.68 × 4,615.90
  4. Step 4: Simplify right side
    8,392.66x = 53,459,876.71
  5. Step 5: Solve for x
    x = 53,459,876.71/8,392.66
  6. Step 6: Final answer
    x = 6,369.84

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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.