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Finding the Fourth Proportional to 14,472.51, 21,722.16 and 8,936.70

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Solution

The fourth proportional to 14,472.51, 21,722.16 and 8,936.70 is: 13,413.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,472.51 : 21,722.16 = 8,936.70 : x
  2. Step 2: Convert to fraction form
    14,472.51/21,722.16 = 8,936.70/x
  3. Step 3: Cross multiply
    14,472.51x = 21,722.16 × 8,936.70
  4. Step 4: Simplify right side
    14,472.51x = 194,124,427.27
  5. Step 5: Solve for x
    x = 194,124,427.27/14,472.51
  6. Step 6: Final answer
    x = 13,413.32

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Why These Related Problems?

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