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Finding the Fourth Proportional to 12,602.84, 17,391.08 and 6,936.48

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Solution

The fourth proportional to 12,602.84, 17,391.08 and 6,936.48 is: 9,571.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,602.84 : 17,391.08 = 6,936.48 : x
  2. Step 2: Convert to fraction form
    12,602.84/17,391.08 = 6,936.48/x
  3. Step 3: Cross multiply
    12,602.84x = 17,391.08 × 6,936.48
  4. Step 4: Simplify right side
    12,602.84x = 120,632,878.60
  5. Step 5: Solve for x
    x = 120,632,878.60/12,602.84
  6. Step 6: Final answer
    x = 9,571.88

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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.