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Finding the Fourth Proportional to 12,896.58, 17,800.45 and 7,863.58

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Solution

The fourth proportional to 12,896.58, 17,800.45 and 7,863.58 is: 10,853.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,896.58 : 17,800.45 = 7,863.58 : x
  2. Step 2: Convert to fraction form
    12,896.58/17,800.45 = 7,863.58/x
  3. Step 3: Cross multiply
    12,896.58x = 17,800.45 × 7,863.58
  4. Step 4: Simplify right side
    12,896.58x = 139,975,165.08
  5. Step 5: Solve for x
    x = 139,975,165.08/12,896.58
  6. Step 6: Final answer
    x = 10,853.66

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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.