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Finding the Fourth Proportional to 14,578.60, 21,867.90 and 11,662.60

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Solution

The fourth proportional to 14,578.60, 21,867.90 and 11,662.60 is: 17,493.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,578.60 : 21,867.90 = 11,662.60 : x
  2. Step 2: Convert to fraction form
    14,578.60/21,867.90 = 11,662.60/x
  3. Step 3: Cross multiply
    14,578.60x = 21,867.90 × 11,662.60
  4. Step 4: Simplify right side
    14,578.60x = 255,036,570.54
  5. Step 5: Solve for x
    x = 255,036,570.54/14,578.60
  6. Step 6: Final answer
    x = 17,493.90

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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.