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Finding the Fourth Proportional to 18,809.69, 25,957.80 and 10,852.38

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Solution

The fourth proportional to 18,809.69, 25,957.80 and 10,852.38 is: 14,976.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,809.69 : 25,957.80 = 10,852.38 : x
  2. Step 2: Convert to fraction form
    18,809.69/25,957.80 = 10,852.38/x
  3. Step 3: Cross multiply
    18,809.69x = 25,957.80 × 10,852.38
  4. Step 4: Simplify right side
    18,809.69x = 281,703,909.56
  5. Step 5: Solve for x
    x = 281,703,909.56/18,809.69
  6. Step 6: Final answer
    x = 14,976.54

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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.