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Finding the Fourth Proportional to 66,616.93, 91,928.46 and 36,400.83

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Solution

The fourth proportional to 66,616.93, 91,928.46 and 36,400.83 is: 50,231.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,616.93 : 91,928.46 = 36,400.83 : x
  2. Step 2: Convert to fraction form
    66,616.93/91,928.46 = 36,400.83/x
  3. Step 3: Cross multiply
    66,616.93x = 91,928.46 × 36,400.83
  4. Step 4: Simplify right side
    66,616.93x = 3,346,271,784.98
  5. Step 5: Solve for x
    x = 3,346,271,784.98/66,616.93
  6. Step 6: Final answer
    x = 50,231.55

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.