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Finding the Fourth Proportional to 8,624.88, 11,887.02 and 7,426.80

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Solution

The fourth proportional to 8,624.88, 11,887.02 and 7,426.80 is: 10,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,624.88 : 11,887.02 = 7,426.80 : x
  2. Step 2: Convert to fraction form
    8,624.88/11,887.02 = 7,426.80/x
  3. Step 3: Cross multiply
    8,624.88x = 11,887.02 × 7,426.80
  4. Step 4: Simplify right side
    8,624.88x = 88,282,520.14
  5. Step 5: Solve for x
    x = 88,282,520.14/8,624.88
  6. Step 6: Final answer
    x = 10,235.80

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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.