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Finding the Fourth Proportional to 73,208.90, 109,840.68 and 28,866.56

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Solution

The fourth proportional to 73,208.90, 109,840.68 and 28,866.56 is: 43,310.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,208.90 : 109,840.68 = 28,866.56 : x
  2. Step 2: Convert to fraction form
    73,208.90/109,840.68 = 28,866.56/x
  3. Step 3: Cross multiply
    73,208.90x = 109,840.68 × 28,866.56
  4. Step 4: Simplify right side
    73,208.90x = 3,170,722,729.50
  5. Step 5: Solve for x
    x = 3,170,722,729.50/73,208.90
  6. Step 6: Final answer
    x = 43,310.62

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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.