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Finding the Fourth Proportional to 23,489.33, 32,415.12 and 12,879

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Solution

The fourth proportional to 23,489.33, 32,415.12 and 12,879 is: 17,772.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    23,489.33 : 32,415.12 = 12,879 : x
  2. Step 2: Convert to fraction form
    23,489.33/32,415.12 = 12,879/x
  3. Step 3: Cross multiply
    23,489.33x = 32,415.12 × 12,879
  4. Step 4: Simplify right side
    23,489.33x = 417,474,330.48
  5. Step 5: Solve for x
    x = 417,474,330.48/23,489.33
  6. Step 6: Final answer
    x = 17,772.94

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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.