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Finding the Fourth Proportional to 22,620.99, 33,931.89 and 8,587.56

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Solution

The fourth proportional to 22,620.99, 33,931.89 and 8,587.56 is: 12,881.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,620.99 : 33,931.89 = 8,587.56 : x
  2. Step 2: Convert to fraction form
    22,620.99/33,931.89 = 8,587.56/x
  3. Step 3: Cross multiply
    22,620.99x = 33,931.89 × 8,587.56
  4. Step 4: Simplify right side
    22,620.99x = 291,392,141.29
  5. Step 5: Solve for x
    x = 291,392,141.29/22,620.99
  6. Step 6: Final answer
    x = 12,881.49

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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.