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Finding the Fourth Proportional to 15,192.59, 20,964.89 and 8,477.69

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Solution

The fourth proportional to 15,192.59, 20,964.89 and 8,477.69 is: 11,698.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,192.59 : 20,964.89 = 8,477.69 : x
  2. Step 2: Convert to fraction form
    15,192.59/20,964.89 = 8,477.69/x
  3. Step 3: Cross multiply
    15,192.59x = 20,964.89 × 8,477.69
  4. Step 4: Simplify right side
    15,192.59x = 177,733,754.67
  5. Step 5: Solve for x
    x = 177,733,754.67/15,192.59
  6. Step 6: Final answer
    x = 11,698.72

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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.