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Finding the Fourth Proportional to 66,928.60, 100,392.90 and 22,540.60

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Solution

The fourth proportional to 66,928.60, 100,392.90 and 22,540.60 is: 33,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,928.60 : 100,392.90 = 22,540.60 : x
  2. Step 2: Convert to fraction form
    66,928.60/100,392.90 = 22,540.60/x
  3. Step 3: Cross multiply
    66,928.60x = 100,392.90 × 22,540.60
  4. Step 4: Simplify right side
    66,928.60x = 2,262,916,201.74
  5. Step 5: Solve for x
    x = 2,262,916,201.74/66,928.60
  6. Step 6: Final answer
    x = 33,810.90

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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.