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Finding the Fourth Proportional to 72,835.70, 109,216.28 and 33,358.97

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Solution

The fourth proportional to 72,835.70, 109,216.28 and 33,358.97 is: 50,021.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,835.70 : 109,216.28 = 33,358.97 : x
  2. Step 2: Convert to fraction form
    72,835.70/109,216.28 = 33,358.97/x
  3. Step 3: Cross multiply
    72,835.70x = 109,216.28 × 33,358.97
  4. Step 4: Simplify right side
    72,835.70x = 3,643,342,964.47
  5. Step 5: Solve for x
    x = 3,643,342,964.47/72,835.70
  6. Step 6: Final answer
    x = 50,021.39

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.