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Finding the Fourth Proportional to 17,611.40, 26,430.35 and 13,652.97

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Solution

The fourth proportional to 17,611.40, 26,430.35 and 13,652.97 is: 20,489.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,611.40 : 26,430.35 = 13,652.97 : x
  2. Step 2: Convert to fraction form
    17,611.40/26,430.35 = 13,652.97/x
  3. Step 3: Cross multiply
    17,611.40x = 26,430.35 × 13,652.97
  4. Step 4: Simplify right side
    17,611.40x = 360,852,775.64
  5. Step 5: Solve for x
    x = 360,852,775.64/17,611.40
  6. Step 6: Final answer
    x = 20,489.73

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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.