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Finding the Fourth Proportional to 21,995.70, 32,993.55 and 13,701.30

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Solution

The fourth proportional to 21,995.70, 32,993.55 and 13,701.30 is: 20,551.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    21,995.70 : 32,993.55 = 13,701.30 : x
  2. Step 2: Convert to fraction form
    21,995.70/32,993.55 = 13,701.30/x
  3. Step 3: Cross multiply
    21,995.70x = 32,993.55 × 13,701.30
  4. Step 4: Simplify right side
    21,995.70x = 452,054,526.62
  5. Step 5: Solve for x
    x = 452,054,526.62/21,995.70
  6. Step 6: Final answer
    x = 20,551.95

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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.