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Finding the Fourth Proportional to 8,626.66, 11,902.89 and 5,487.46

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Solution

The fourth proportional to 8,626.66, 11,902.89 and 5,487.46 is: 7,571.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,626.66 : 11,902.89 = 5,487.46 : x
  2. Step 2: Convert to fraction form
    8,626.66/11,902.89 = 5,487.46/x
  3. Step 3: Cross multiply
    8,626.66x = 11,902.89 × 5,487.46
  4. Step 4: Simplify right side
    8,626.66x = 65,316,632.76
  5. Step 5: Solve for x
    x = 65,316,632.76/8,626.66
  6. Step 6: Final answer
    x = 7,571.49

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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.