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Finding the Fourth Proportional to 12,679.34, 17,497.86 and 6,937.14

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Solution

The fourth proportional to 12,679.34, 17,497.86 and 6,937.14 is: 9,573.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,679.34 : 17,497.86 = 6,937.14 : x
  2. Step 2: Convert to fraction form
    12,679.34/17,497.86 = 6,937.14/x
  3. Step 3: Cross multiply
    12,679.34x = 17,497.86 × 6,937.14
  4. Step 4: Simplify right side
    12,679.34x = 121,385,104.52
  5. Step 5: Solve for x
    x = 121,385,104.52/12,679.34
  6. Step 6: Final answer
    x = 9,573.46

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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.