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Finding the Fourth Proportional to 18,594.78, 25,660.78 and 10,211.28

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Solution

The fourth proportional to 18,594.78, 25,660.78 and 10,211.28 is: 14,091.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,594.78 : 25,660.78 = 10,211.28 : x
  2. Step 2: Convert to fraction form
    18,594.78/25,660.78 = 10,211.28/x
  3. Step 3: Cross multiply
    18,594.78x = 25,660.78 × 10,211.28
  4. Step 4: Simplify right side
    18,594.78x = 262,029,518.59
  5. Step 5: Solve for x
    x = 262,029,518.59/18,594.78
  6. Step 6: Final answer
    x = 14,091.56

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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.