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Finding the Fourth Proportional to 111,937.92, 154,470.66 and 66,605.46

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Solution

The fourth proportional to 111,937.92, 154,470.66 and 66,605.46 is: 91,913.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,937.92 : 154,470.66 = 66,605.46 : x
  2. Step 2: Convert to fraction form
    111,937.92/154,470.66 = 66,605.46/x
  3. Step 3: Cross multiply
    111,937.92x = 154,470.66 × 66,605.46
  4. Step 4: Simplify right side
    111,937.92x = 10,288,589,365.80
  5. Step 5: Solve for x
    x = 10,288,589,365.80/111,937.92
  6. Step 6: Final answer
    x = 91,913.35

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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.