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Finding the Fourth Proportional to 64,067.56, 96,085.86 and 28,509.64

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Solution

The fourth proportional to 64,067.56, 96,085.86 and 28,509.64 is: 42,757.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,067.56 : 96,085.86 = 28,509.64 : x
  2. Step 2: Convert to fraction form
    64,067.56/96,085.86 = 28,509.64/x
  3. Step 3: Cross multiply
    64,067.56x = 96,085.86 × 28,509.64
  4. Step 4: Simplify right side
    64,067.56x = 2,739,373,277.69
  5. Step 5: Solve for x
    x = 2,739,373,277.69/64,067.56
  6. Step 6: Final answer
    x = 42,757.57

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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.