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Finding the Fourth Proportional to 12,586.99, 17,370.49 and 6,922.17

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Solution

The fourth proportional to 12,586.99, 17,370.49 and 6,922.17 is: 9,552.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,586.99 : 17,370.49 = 6,922.17 : x
  2. Step 2: Convert to fraction form
    12,586.99/17,370.49 = 6,922.17/x
  3. Step 3: Cross multiply
    12,586.99x = 17,370.49 × 6,922.17
  4. Step 4: Simplify right side
    12,586.99x = 120,241,458.64
  5. Step 5: Solve for x
    x = 120,241,458.64/12,586.99
  6. Step 6: Final answer
    x = 9,552.83

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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.