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Finding the Fourth Proportional to 18,701.40, 28,052.10 and 9,466.20

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Solution

The fourth proportional to 18,701.40, 28,052.10 and 9,466.20 is: 14,199.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,701.40 : 28,052.10 = 9,466.20 : x
  2. Step 2: Convert to fraction form
    18,701.40/28,052.10 = 9,466.20/x
  3. Step 3: Cross multiply
    18,701.40x = 28,052.10 × 9,466.20
  4. Step 4: Simplify right side
    18,701.40x = 265,546,789.02
  5. Step 5: Solve for x
    x = 265,546,789.02/18,701.40
  6. Step 6: Final answer
    x = 14,199.30

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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.