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Finding the Fourth Proportional to 14,936.19, 20,612.94 and 9,891.66

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Solution

The fourth proportional to 14,936.19, 20,612.94 and 9,891.66 is: 13,651.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,936.19 : 20,612.94 = 9,891.66 : x
  2. Step 2: Convert to fraction form
    14,936.19/20,612.94 = 9,891.66/x
  3. Step 3: Cross multiply
    14,936.19x = 20,612.94 × 9,891.66
  4. Step 4: Simplify right side
    14,936.19x = 203,896,194.08
  5. Step 5: Solve for x
    x = 203,896,194.08/14,936.19
  6. Step 6: Final answer
    x = 13,651.15

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Half scale
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Double scale
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Similar ratio
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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.