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Finding the Fourth Proportional to 17,808.40, 26,680.20 and 14,503.60

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Solution

The fourth proportional to 17,808.40, 26,680.20 and 14,503.60 is: 21,729.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,808.40 : 26,680.20 = 14,503.60 : x
  2. Step 2: Convert to fraction form
    17,808.40/26,680.20 = 14,503.60/x
  3. Step 3: Cross multiply
    17,808.40x = 26,680.20 × 14,503.60
  4. Step 4: Simplify right side
    17,808.40x = 386,958,948.72
  5. Step 5: Solve for x
    x = 386,958,948.72/17,808.40
  6. Step 6: Final answer
    x = 21,729.01

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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.