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Finding the Fourth Proportional to 12,859.06, 17,747.14 and 7,194.12

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Solution

The fourth proportional to 12,859.06, 17,747.14 and 7,194.12 is: 9,928.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,859.06 : 17,747.14 = 7,194.12 : x
  2. Step 2: Convert to fraction form
    12,859.06/17,747.14 = 7,194.12/x
  3. Step 3: Cross multiply
    12,859.06x = 17,747.14 × 7,194.12
  4. Step 4: Simplify right side
    12,859.06x = 127,675,054.82
  5. Step 5: Solve for x
    x = 127,675,054.82/12,859.06
  6. Step 6: Final answer
    x = 9,928.80

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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.