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Finding the Fourth Proportional to 111,952.15, 154,496.75 and 68,915.63

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Solution

The fourth proportional to 111,952.15, 154,496.75 and 68,915.63 is: 95,105.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,952.15 : 154,496.75 = 68,915.63 : x
  2. Step 2: Convert to fraction form
    111,952.15/154,496.75 = 68,915.63/x
  3. Step 3: Cross multiply
    111,952.15x = 154,496.75 × 68,915.63
  4. Step 4: Simplify right side
    111,952.15x = 10,647,240,900.87
  5. Step 5: Solve for x
    x = 10,647,240,900.87/111,952.15
  6. Step 6: Final answer
    x = 95,105.29

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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.