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Finding the Fourth Proportional to 18,703.69, 25,810.25 and 10,205.44

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Solution

The fourth proportional to 18,703.69, 25,810.25 and 10,205.44 is: 14,083.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,703.69 : 25,810.25 = 10,205.44 : x
  2. Step 2: Convert to fraction form
    18,703.69/25,810.25 = 10,205.44/x
  3. Step 3: Cross multiply
    18,703.69x = 25,810.25 × 10,205.44
  4. Step 4: Simplify right side
    18,703.69x = 263,404,842.21
  5. Step 5: Solve for x
    x = 263,404,842.21/18,703.69
  6. Step 6: Final answer
    x = 14,083.04

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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.