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Finding the Fourth Proportional to 8,709.43, 12,019.76 and 4,933.26

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Solution

The fourth proportional to 8,709.43, 12,019.76 and 4,933.26 is: 6,808.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,709.43 : 12,019.76 = 4,933.26 : x
  2. Step 2: Convert to fraction form
    8,709.43/12,019.76 = 4,933.26/x
  3. Step 3: Cross multiply
    8,709.43x = 12,019.76 × 4,933.26
  4. Step 4: Simplify right side
    8,709.43x = 59,296,601.22
  5. Step 5: Solve for x
    x = 59,296,601.22/8,709.43
  6. Step 6: Final answer
    x = 6,808.32

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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.