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Finding the Fourth Proportional to 16,792.81, 23,174.99 and 9,721.51

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Solution

The fourth proportional to 16,792.81, 23,174.99 and 9,721.51 is: 13,416.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,792.81 : 23,174.99 = 9,721.51 : x
  2. Step 2: Convert to fraction form
    16,792.81/23,174.99 = 9,721.51/x
  3. Step 3: Cross multiply
    16,792.81x = 23,174.99 × 9,721.51
  4. Step 4: Simplify right side
    16,792.81x = 225,295,897.03
  5. Step 5: Solve for x
    x = 225,295,897.03/16,792.81
  6. Step 6: Final answer
    x = 13,416.21

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1.5x scale

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.