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Finding the Fourth Proportional to 9,266.40, 13,910.40 and 5,572.80

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Solution

The fourth proportional to 9,266.40, 13,910.40 and 5,572.80 is: 8,365.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    9,266.40 : 13,910.40 = 5,572.80 : x
  2. Step 2: Convert to fraction form
    9,266.40/13,910.40 = 5,572.80/x
  3. Step 3: Cross multiply
    9,266.40x = 13,910.40 × 5,572.80
  4. Step 4: Simplify right side
    9,266.40x = 77,519,877.12
  5. Step 5: Solve for x
    x = 77,519,877.12/9,266.40
  6. Step 6: Final answer
    x = 8,365.70

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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.