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Finding the Fourth Proportional to 109,695.76, 151,380.28 and 59,394.76

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Solution

The fourth proportional to 109,695.76, 151,380.28 and 59,394.76 is: 81,964.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,695.76 : 151,380.28 = 59,394.76 : x
  2. Step 2: Convert to fraction form
    109,695.76/151,380.28 = 59,394.76/x
  3. Step 3: Cross multiply
    109,695.76x = 151,380.28 × 59,394.76
  4. Step 4: Simplify right side
    109,695.76x = 8,991,195,399.33
  5. Step 5: Solve for x
    x = 8,991,195,399.33/109,695.76
  6. Step 6: Final answer
    x = 81,964.84

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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.