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Finding the Fourth Proportional to 17,678.25, 24,395.99 and 9,721.02

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Solution

The fourth proportional to 17,678.25, 24,395.99 and 9,721.02 is: 13,415.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,678.25 : 24,395.99 = 9,721.02 : x
  2. Step 2: Convert to fraction form
    17,678.25/24,395.99 = 9,721.02/x
  3. Step 3: Cross multiply
    17,678.25x = 24,395.99 × 9,721.02
  4. Step 4: Simplify right side
    17,678.25x = 237,153,906.71
  5. Step 5: Solve for x
    x = 237,153,906.71/17,678.25
  6. Step 6: Final answer
    x = 13,415.01

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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.