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Finding the Fourth Proportional to 8,905.38, 12,289.26 and 4,926.41

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Solution

The fourth proportional to 8,905.38, 12,289.26 and 4,926.41 is: 6,798.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,905.38 : 12,289.26 = 4,926.41 : x
  2. Step 2: Convert to fraction form
    8,905.38/12,289.26 = 4,926.41/x
  3. Step 3: Cross multiply
    8,905.38x = 12,289.26 × 4,926.41
  4. Step 4: Simplify right side
    8,905.38x = 60,541,871.91
  5. Step 5: Solve for x
    x = 60,541,871.91/8,905.38
  6. Step 6: Final answer
    x = 6,798.35

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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.