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Finding the Fourth Proportional to 18,703.95, 25,813.83 and 10,747.72

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Solution

The fourth proportional to 18,703.95, 25,813.83 and 10,747.72 is: 14,833.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.95 : 25,813.83 = 10,747.72 : x
  2. Step 2: Convert to fraction form
    18,703.95/25,813.83 = 10,747.72/x
  3. Step 3: Cross multiply
    18,703.95x = 25,813.83 × 10,747.72
  4. Step 4: Simplify right side
    18,703.95x = 277,439,816.97
  5. Step 5: Solve for x
    x = 277,439,816.97/18,703.95
  6. Step 6: Final answer
    x = 14,833.22

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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.