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Finding the Fourth Proportional to 64,297.12, 88,731.60 and 36,008.56

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Solution

The fourth proportional to 64,297.12, 88,731.60 and 36,008.56 is: 49,692.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,297.12 : 88,731.60 = 36,008.56 : x
  2. Step 2: Convert to fraction form
    64,297.12/88,731.60 = 36,008.56/x
  3. Step 3: Cross multiply
    64,297.12x = 88,731.60 × 36,008.56
  4. Step 4: Simplify right side
    64,297.12x = 3,195,097,142.50
  5. Step 5: Solve for x
    x = 3,195,097,142.50/64,297.12
  6. Step 6: Final answer
    x = 49,692.69

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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.