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Finding the Fourth Proportional to 8,625.64, 11,902.72 and 5,270.08

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Solution

The fourth proportional to 8,625.64, 11,902.72 and 5,270.08 is: 7,272.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,625.64 : 11,902.72 = 5,270.08 : x
  2. Step 2: Convert to fraction form
    8,625.64/11,902.72 = 5,270.08/x
  3. Step 3: Cross multiply
    8,625.64x = 11,902.72 × 5,270.08
  4. Step 4: Simplify right side
    8,625.64x = 62,728,200.75
  5. Step 5: Solve for x
    x = 62,728,200.75/8,625.64
  6. Step 6: Final answer
    x = 7,272.30

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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.