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Finding the Fourth Proportional to 104,615.76, 156,997.74 and 45,468.72

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Solution

The fourth proportional to 104,615.76, 156,997.74 and 45,468.72 is: 68,235.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,615.76 : 156,997.74 = 45,468.72 : x
  2. Step 2: Convert to fraction form
    104,615.76/156,997.74 = 45,468.72/x
  3. Step 3: Cross multiply
    104,615.76x = 156,997.74 × 45,468.72
  4. Step 4: Simplify right side
    104,615.76x = 7,138,486,280.69
  5. Step 5: Solve for x
    x = 7,138,486,280.69/104,615.76
  6. Step 6: Final answer
    x = 68,235.29

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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.