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Finding the Fourth Proportional to 13,663.18, 20,506.92 and 7,093.90

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Solution

The fourth proportional to 13,663.18, 20,506.92 and 7,093.90 is: 10,647.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,663.18 : 20,506.92 = 7,093.90 : x
  2. Step 2: Convert to fraction form
    13,663.18/20,506.92 = 7,093.90/x
  3. Step 3: Cross multiply
    13,663.18x = 20,506.92 × 7,093.90
  4. Step 4: Simplify right side
    13,663.18x = 145,474,039.79
  5. Step 5: Solve for x
    x = 145,474,039.79/13,663.18
  6. Step 6: Final answer
    x = 10,647.16

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1.5x scale

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.