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Finding the Fourth Proportional to 9,721.17, 14,505.90 and 8,673.96

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Solution

The fourth proportional to 9,721.17, 14,505.90 and 8,673.96 is: 12,943.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,721.17 : 14,505.90 = 8,673.96 : x
  2. Step 2: Convert to fraction form
    9,721.17/14,505.90 = 8,673.96/x
  3. Step 3: Cross multiply
    9,721.17x = 14,505.90 × 8,673.96
  4. Step 4: Simplify right side
    9,721.17x = 125,823,596.36
  5. Step 5: Solve for x
    x = 125,823,596.36/9,721.17
  6. Step 6: Final answer
    x = 12,943.26

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.