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Finding the Fourth Proportional to 80,531.72, 111,133.77 and 46,997.72

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Solution

The fourth proportional to 80,531.72, 111,133.77 and 46,997.72 is: 64,856.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,531.72 : 111,133.77 = 46,997.72 : x
  2. Step 2: Convert to fraction form
    80,531.72/111,133.77 = 46,997.72/x
  3. Step 3: Cross multiply
    80,531.72x = 111,133.77 × 46,997.72
  4. Step 4: Simplify right side
    80,531.72x = 5,223,033,754.21
  5. Step 5: Solve for x
    x = 5,223,033,754.21/80,531.72
  6. Step 6: Final answer
    x = 64,856.85

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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.