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Finding the Fourth Proportional to 66,168.60, 99,185.16 and 28,697.09

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Solution

The fourth proportional to 66,168.60, 99,185.16 and 28,697.09 is: 43,016.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,168.60 : 99,185.16 = 28,697.09 : x
  2. Step 2: Convert to fraction form
    66,168.60/99,185.16 = 28,697.09/x
  3. Step 3: Cross multiply
    66,168.60x = 99,185.16 × 28,697.09
  4. Step 4: Simplify right side
    66,168.60x = 2,846,324,913.45
  5. Step 5: Solve for x
    x = 2,846,324,913.45/66,168.60
  6. Step 6: Final answer
    x = 43,016.25

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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.