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Finding the Fourth Proportional to 21,710.36, 29,925.62 and 17,724.62

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Solution

The fourth proportional to 21,710.36, 29,925.62 and 17,724.62 is: 24,431.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,710.36 : 29,925.62 = 17,724.62 : x
  2. Step 2: Convert to fraction form
    21,710.36/29,925.62 = 17,724.62/x
  3. Step 3: Cross multiply
    21,710.36x = 29,925.62 × 17,724.62
  4. Step 4: Simplify right side
    21,710.36x = 530,420,295.42
  5. Step 5: Solve for x
    x = 530,420,295.42/21,710.36
  6. Step 6: Final answer
    x = 24,431.66

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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.