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Finding the Fourth Proportional to 9,266.70, 13,900.05 and 8,610.60

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Solution

The fourth proportional to 9,266.70, 13,900.05 and 8,610.60 is: 12,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,266.70 : 13,900.05 = 8,610.60 : x
  2. Step 2: Convert to fraction form
    9,266.70/13,900.05 = 8,610.60/x
  3. Step 3: Cross multiply
    9,266.70x = 13,900.05 × 8,610.60
  4. Step 4: Simplify right side
    9,266.70x = 119,687,770.53
  5. Step 5: Solve for x
    x = 119,687,770.53/9,266.70
  6. Step 6: Final answer
    x = 12,915.90

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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.