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Finding the Fourth Proportional to 80,649.28, 111,288.40 and 46,652.32

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Solution

The fourth proportional to 80,649.28, 111,288.40 and 46,652.32 is: 64,375.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    80,649.28 : 111,288.40 = 46,652.32 : x
  2. Step 2: Convert to fraction form
    80,649.28/111,288.40 = 46,652.32/x
  3. Step 3: Cross multiply
    80,649.28x = 111,288.40 × 46,652.32
  4. Step 4: Simplify right side
    80,649.28x = 5,191,862,049.09
  5. Step 5: Solve for x
    x = 5,191,862,049.09/80,649.28
  6. Step 6: Final answer
    x = 64,375.80

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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.