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Finding the Fourth Proportional to 19,705.60, 27,193.21 and 10,753.21

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Solution

The fourth proportional to 19,705.60, 27,193.21 and 10,753.21 is: 14,839.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,705.60 : 27,193.21 = 10,753.21 : x
  2. Step 2: Convert to fraction form
    19,705.60/27,193.21 = 10,753.21/x
  3. Step 3: Cross multiply
    19,705.60x = 27,193.21 × 10,753.21
  4. Step 4: Simplify right side
    19,705.60x = 292,414,297.70
  5. Step 5: Solve for x
    x = 292,414,297.70/19,705.60
  6. Step 6: Final answer
    x = 14,839.15

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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.