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Finding the Fourth Proportional to 13,693.88, 20,525.81 and 5,372.34

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Solution

The fourth proportional to 13,693.88, 20,525.81 and 5,372.34 is: 8,052.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,693.88 : 20,525.81 = 5,372.34 : x
  2. Step 2: Convert to fraction form
    13,693.88/20,525.81 = 5,372.34/x
  3. Step 3: Cross multiply
    13,693.88x = 20,525.81 × 5,372.34
  4. Step 4: Simplify right side
    13,693.88x = 110,271,603.23
  5. Step 5: Solve for x
    x = 110,271,603.23/13,693.88
  6. Step 6: Final answer
    x = 8,052.62

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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.