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Finding the Fourth Proportional to 208,620.96, 312,849.56 and 73,656.24

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Solution

The fourth proportional to 208,620.96, 312,849.56 and 73,656.24 is: 110,455.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,620.96 : 312,849.56 = 73,656.24 : x
  2. Step 2: Convert to fraction form
    208,620.96/312,849.56 = 73,656.24/x
  3. Step 3: Cross multiply
    208,620.96x = 312,849.56 × 73,656.24
  4. Step 4: Simplify right side
    208,620.96x = 23,043,321,906.97
  5. Step 5: Solve for x
    x = 23,043,321,906.97/208,620.96
  6. Step 6: Final answer
    x = 110,455.45

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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.