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Finding the Fourth Proportional to 14,638.68, 20,201.24 and 7,924.24

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Solution

The fourth proportional to 14,638.68, 20,201.24 and 7,924.24 is: 10,935.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,638.68 : 20,201.24 = 7,924.24 : x
  2. Step 2: Convert to fraction form
    14,638.68/20,201.24 = 7,924.24/x
  3. Step 3: Cross multiply
    14,638.68x = 20,201.24 × 7,924.24
  4. Step 4: Simplify right side
    14,638.68x = 160,079,474.06
  5. Step 5: Solve for x
    x = 160,079,474.06/14,638.68
  6. Step 6: Final answer
    x = 10,935.38

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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.