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Finding the Fourth Proportional to 111,990.58, 154,535.79 and 68,963.18

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Solution

The fourth proportional to 111,990.58, 154,535.79 and 68,963.18 is: 95,162.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,990.58 : 154,535.79 = 68,963.18 : x
  2. Step 2: Convert to fraction form
    111,990.58/154,535.79 = 68,963.18/x
  3. Step 3: Cross multiply
    111,990.58x = 154,535.79 × 68,963.18
  4. Step 4: Simplify right side
    111,990.58x = 10,657,279,502.21
  5. Step 5: Solve for x
    x = 10,657,279,502.21/111,990.58
  6. Step 6: Final answer
    x = 95,162.29

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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.