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Finding the Fourth Proportional to 16,979, 23,429.94 and 9,425.48

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Solution

The fourth proportional to 16,979, 23,429.94 and 9,425.48 is: 13,006.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,979 : 23,429.94 = 9,425.48 : x
  2. Step 2: Convert to fraction form
    16,979/23,429.94 = 9,425.48/x
  3. Step 3: Cross multiply
    16,979x = 23,429.94 × 9,425.48
  4. Step 4: Simplify right side
    16,979x = 220,838,430.87
  5. Step 5: Solve for x
    x = 220,838,430.87/16,979
  6. Step 6: Final answer
    x = 13,006.56

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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.