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Finding the Fourth Proportional to 22,487.70, 33,708.90 and 7,686.54

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Solution

The fourth proportional to 22,487.70, 33,708.90 and 7,686.54 is: 11,522.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,487.70 : 33,708.90 = 7,686.54 : x
  2. Step 2: Convert to fraction form
    22,487.70/33,708.90 = 7,686.54/x
  3. Step 3: Cross multiply
    22,487.70x = 33,708.90 × 7,686.54
  4. Step 4: Simplify right side
    22,487.70x = 259,104,808.21
  5. Step 5: Solve for x
    x = 259,104,808.21/22,487.70
  6. Step 6: Final answer
    x = 11,522.07

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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.