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Finding the Fourth Proportional to 18,431.92, 25,435.92 and 10,048.48

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Solution

The fourth proportional to 18,431.92, 25,435.92 and 10,048.48 is: 13,866.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,431.92 : 25,435.92 = 10,048.48 : x
  2. Step 2: Convert to fraction form
    18,431.92/25,435.92 = 10,048.48/x
  3. Step 3: Cross multiply
    18,431.92x = 25,435.92 × 10,048.48
  4. Step 4: Simplify right side
    18,431.92x = 255,592,333.40
  5. Step 5: Solve for x
    x = 255,592,333.40/18,431.92
  6. Step 6: Final answer
    x = 13,866.83

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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.