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Finding the Fourth Proportional to 8,674.90, 11,925.12 and 8,620.22

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Solution

The fourth proportional to 8,674.90, 11,925.12 and 8,620.22 is: 11,849.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,674.90 : 11,925.12 = 8,620.22 : x
  2. Step 2: Convert to fraction form
    8,674.90/11,925.12 = 8,620.22/x
  3. Step 3: Cross multiply
    8,674.90x = 11,925.12 × 8,620.22
  4. Step 4: Simplify right side
    8,674.90x = 102,797,220.07
  5. Step 5: Solve for x
    x = 102,797,220.07/8,674.90
  6. Step 6: Final answer
    x = 11,849.96

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.37) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.