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Finding the Fourth Proportional to 15,813.92, 23,724.29 and 4,721.51

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Solution

The fourth proportional to 15,813.92, 23,724.29 and 4,721.51 is: 7,083.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,813.92 : 23,724.29 = 4,721.51 : x
  2. Step 2: Convert to fraction form
    15,813.92/23,724.29 = 4,721.51/x
  3. Step 3: Cross multiply
    15,813.92x = 23,724.29 × 4,721.51
  4. Step 4: Simplify right side
    15,813.92x = 112,014,543.59
  5. Step 5: Solve for x
    x = 112,014,543.59/15,813.92
  6. Step 6: Final answer
    x = 7,083.29

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.