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Finding the Fourth Proportional to 109,659.45, 151,330.28 and 59,358.45

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Solution

The fourth proportional to 109,659.45, 151,330.28 and 59,358.45 is: 81,914.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,659.45 : 151,330.28 = 59,358.45 : x
  2. Step 2: Convert to fraction form
    109,659.45/151,330.28 = 59,358.45/x
  3. Step 3: Cross multiply
    109,659.45x = 151,330.28 × 59,358.45
  4. Step 4: Simplify right side
    109,659.45x = 8,982,730,858.87
  5. Step 5: Solve for x
    x = 8,982,730,858.87/109,659.45
  6. Step 6: Final answer
    x = 81,914.79

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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.