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Finding the Fourth Proportional to 11,716.60, 17,574.90 and 10,641.40

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Solution

The fourth proportional to 11,716.60, 17,574.90 and 10,641.40 is: 15,962.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,716.60 : 17,574.90 = 10,641.40 : x
  2. Step 2: Convert to fraction form
    11,716.60/17,574.90 = 10,641.40/x
  3. Step 3: Cross multiply
    11,716.60x = 17,574.90 × 10,641.40
  4. Step 4: Simplify right side
    11,716.60x = 187,021,540.86
  5. Step 5: Solve for x
    x = 187,021,540.86/11,716.60
  6. Step 6: Final answer
    x = 15,962.10

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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.