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Finding the Fourth Proportional to 13,398.41, 20,143.18 and 10,951.00

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Solution

The fourth proportional to 13,398.41, 20,143.18 and 10,951.00 is: 16,463.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,398.41 : 20,143.18 = 10,951.00 : x
  2. Step 2: Convert to fraction form
    13,398.41/20,143.18 = 10,951.00/x
  3. Step 3: Cross multiply
    13,398.41x = 20,143.18 × 10,951.00
  4. Step 4: Simplify right side
    13,398.41x = 220,587,927.51
  5. Step 5: Solve for x
    x = 220,587,927.51/13,398.41
  6. Step 6: Final answer
    x = 16,463.74

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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.