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Finding the Fourth Proportional to 13,341.66, 18,409.92 and 7,372.97

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Solution

The fourth proportional to 13,341.66, 18,409.92 and 7,372.97 is: 10,173.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,341.66 : 18,409.92 = 7,372.97 : x
  2. Step 2: Convert to fraction form
    13,341.66/18,409.92 = 7,372.97/x
  3. Step 3: Cross multiply
    13,341.66x = 18,409.92 × 7,372.97
  4. Step 4: Simplify right side
    13,341.66x = 135,735,787.86
  5. Step 5: Solve for x
    x = 135,735,787.86/13,341.66
  6. Step 6: Final answer
    x = 10,173.83

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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.