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Finding the Fourth Proportional to 18,641.96, 25,725.18 and 10,678.52

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Solution

The fourth proportional to 18,641.96, 25,725.18 and 10,678.52 is: 14,735.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,641.96 : 25,725.18 = 10,678.52 : x
  2. Step 2: Convert to fraction form
    18,641.96/25,725.18 = 10,678.52/x
  3. Step 3: Cross multiply
    18,641.96x = 25,725.18 × 10,678.52
  4. Step 4: Simplify right side
    18,641.96x = 274,706,849.13
  5. Step 5: Solve for x
    x = 274,706,849.13/18,641.96
  6. Step 6: Final answer
    x = 14,735.94

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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.