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Finding the Fourth Proportional to 12,415.44, 17,130.84 and 6,964.68

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Solution

The fourth proportional to 12,415.44, 17,130.84 and 6,964.68 is: 9,609.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,415.44 : 17,130.84 = 6,964.68 : x
  2. Step 2: Convert to fraction form
    12,415.44/17,130.84 = 6,964.68/x
  3. Step 3: Cross multiply
    12,415.44x = 17,130.84 × 6,964.68
  4. Step 4: Simplify right side
    12,415.44x = 119,310,818.73
  5. Step 5: Solve for x
    x = 119,310,818.73/12,415.44
  6. Step 6: Final answer
    x = 9,609.88

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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.