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Finding the Fourth Proportional to 18,362.90, 25,340.19 and 10,809.17

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Solution

The fourth proportional to 18,362.90, 25,340.19 and 10,809.17 is: 14,916.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,362.90 : 25,340.19 = 10,809.17 : x
  2. Step 2: Convert to fraction form
    18,362.90/25,340.19 = 10,809.17/x
  3. Step 3: Cross multiply
    18,362.90x = 25,340.19 × 10,809.17
  4. Step 4: Simplify right side
    18,362.90x = 273,906,481.40
  5. Step 5: Solve for x
    x = 273,906,481.40/18,362.90
  6. Step 6: Final answer
    x = 14,916.30

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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.