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Finding the Fourth Proportional to 26,462.39, 39,698.13 and 8,928.11

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Solution

The fourth proportional to 26,462.39, 39,698.13 and 8,928.11 is: 13,393.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,462.39 : 39,698.13 = 8,928.11 : x
  2. Step 2: Convert to fraction form
    26,462.39/39,698.13 = 8,928.11/x
  3. Step 3: Cross multiply
    26,462.39x = 39,698.13 × 8,928.11
  4. Step 4: Simplify right side
    26,462.39x = 354,429,072.94
  5. Step 5: Solve for x
    x = 354,429,072.94/26,462.39
  6. Step 6: Final answer
    x = 13,393.69

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.