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Finding the Fourth Proportional to 10,852.38, 14,978.97 and 6,139.44

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Solution

The fourth proportional to 10,852.38, 14,978.97 and 6,139.44 is: 8,473.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,852.38 : 14,978.97 = 6,139.44 : x
  2. Step 2: Convert to fraction form
    10,852.38/14,978.97 = 6,139.44/x
  3. Step 3: Cross multiply
    10,852.38x = 14,978.97 × 6,139.44
  4. Step 4: Simplify right side
    10,852.38x = 91,962,487.58
  5. Step 5: Solve for x
    x = 91,962,487.58/10,852.38
  6. Step 6: Final answer
    x = 8,473.95

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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.