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Finding the Fourth Proportional to 111,963.93, 154,500.05 and 66,634.60

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Solution

The fourth proportional to 111,963.93, 154,500.05 and 66,634.60 is: 91,949.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,963.93 : 154,500.05 = 66,634.60 : x
  2. Step 2: Convert to fraction form
    111,963.93/154,500.05 = 66,634.60/x
  3. Step 3: Cross multiply
    111,963.93x = 154,500.05 × 66,634.60
  4. Step 4: Simplify right side
    111,963.93x = 10,295,048,812.07
  5. Step 5: Solve for x
    x = 10,295,048,812.07/111,963.93
  6. Step 6: Final answer
    x = 91,949.69

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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.