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Finding the Fourth Proportional to 64,198.50, 96,320.56 and 28,656.60

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Solution

The fourth proportional to 64,198.50, 96,320.56 and 28,656.60 is: 42,995.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,198.50 : 96,320.56 = 28,656.60 : x
  2. Step 2: Convert to fraction form
    64,198.50/96,320.56 = 28,656.60/x
  3. Step 3: Cross multiply
    64,198.50x = 96,320.56 × 28,656.60
  4. Step 4: Simplify right side
    64,198.50x = 2,760,219,759.70
  5. Step 5: Solve for x
    x = 2,760,219,759.70/64,198.50
  6. Step 6: Final answer
    x = 42,995.08

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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.