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Finding the Fourth Proportional to 18,840.08, 25,998.28 and 10,456.08

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Solution

The fourth proportional to 18,840.08, 25,998.28 and 10,456.08 is: 14,428.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,840.08 : 25,998.28 = 10,456.08 : x
  2. Step 2: Convert to fraction form
    18,840.08/25,998.28 = 10,456.08/x
  3. Step 3: Cross multiply
    18,840.08x = 25,998.28 × 10,456.08
  4. Step 4: Simplify right side
    18,840.08x = 271,840,095.54
  5. Step 5: Solve for x
    x = 271,840,095.54/18,840.08
  6. Step 6: Final answer
    x = 14,428.82

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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.