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Finding the Fourth Proportional to 111,960.18, 154,497.96 and 61,659.18

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Solution

The fourth proportional to 111,960.18, 154,497.96 and 61,659.18 is: 85,085.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,960.18 : 154,497.96 = 61,659.18 : x
  2. Step 2: Convert to fraction form
    111,960.18/154,497.96 = 61,659.18/x
  3. Step 3: Cross multiply
    111,960.18x = 154,497.96 × 61,659.18
  4. Step 4: Simplify right side
    111,960.18x = 9,526,217,525.27
  5. Step 5: Solve for x
    x = 9,526,217,525.27/111,960.18
  6. Step 6: Final answer
    x = 85,085.76

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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.