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Finding the Fourth Proportional to 18,298.23, 25,251.54 and 9,914.73

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Solution

The fourth proportional to 18,298.23, 25,251.54 and 9,914.73 is: 13,682.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,298.23 : 25,251.54 = 9,914.73 : x
  2. Step 2: Convert to fraction form
    18,298.23/25,251.54 = 9,914.73/x
  3. Step 3: Cross multiply
    18,298.23x = 25,251.54 × 9,914.73
  4. Step 4: Simplify right side
    18,298.23x = 250,362,201.18
  5. Step 5: Solve for x
    x = 250,362,201.18/18,298.23
  6. Step 6: Final answer
    x = 13,682.32

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Half scale
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Double scale
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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.