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Finding the Fourth Proportional to 12,611.34, 17,403.48 and 7,022.34

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Solution

The fourth proportional to 12,611.34, 17,403.48 and 7,022.34 is: 9,690.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,611.34 : 17,403.48 = 7,022.34 : x
  2. Step 2: Convert to fraction form
    12,611.34/17,403.48 = 7,022.34/x
  3. Step 3: Cross multiply
    12,611.34x = 17,403.48 × 7,022.34
  4. Step 4: Simplify right side
    12,611.34x = 122,213,153.74
  5. Step 5: Solve for x
    x = 122,213,153.74/12,611.34
  6. Step 6: Final answer
    x = 9,690.73

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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.