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Finding the Fourth Proportional to 11,374.92, 17,040.42 and 6,429.42

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Solution

The fourth proportional to 11,374.92, 17,040.42 and 6,429.42 is: 9,631.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,374.92 : 17,040.42 = 6,429.42 : x
  2. Step 2: Convert to fraction form
    11,374.92/17,040.42 = 6,429.42/x
  3. Step 3: Cross multiply
    11,374.92x = 17,040.42 × 6,429.42
  4. Step 4: Simplify right side
    11,374.92x = 109,560,017.16
  5. Step 5: Solve for x
    x = 109,560,017.16/11,374.92
  6. Step 6: Final answer
    x = 9,631.72

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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.