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Finding the Fourth Proportional to 10,936.60, 16,404.90 and 10,288.60

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Solution

The fourth proportional to 10,936.60, 16,404.90 and 10,288.60 is: 15,432.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,936.60 : 16,404.90 = 10,288.60 : x
  2. Step 2: Convert to fraction form
    10,936.60/16,404.90 = 10,288.60/x
  3. Step 3: Cross multiply
    10,936.60x = 16,404.90 × 10,288.60
  4. Step 4: Simplify right side
    10,936.60x = 168,783,454.14
  5. Step 5: Solve for x
    x = 168,783,454.14/10,936.60
  6. Step 6: Final answer
    x = 15,432.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.