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Finding the Fourth Proportional to 19,557.88, 26,982.80 and 12,847.16

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Solution

The fourth proportional to 19,557.88, 26,982.80 and 12,847.16 is: 17,724.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,557.88 : 26,982.80 = 12,847.16 : x
  2. Step 2: Convert to fraction form
    19,557.88/26,982.80 = 12,847.16/x
  3. Step 3: Cross multiply
    19,557.88x = 26,982.80 × 12,847.16
  4. Step 4: Simplify right side
    19,557.88x = 346,652,348.85
  5. Step 5: Solve for x
    x = 346,652,348.85/19,557.88
  6. Step 6: Final answer
    x = 17,724.43

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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.