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Finding the Fourth Proportional to 104,077.91, 156,164.42 and 56,621.87

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Solution

The fourth proportional to 104,077.91, 156,164.42 and 56,621.87 is: 84,958.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,077.91 : 156,164.42 = 56,621.87 : x
  2. Step 2: Convert to fraction form
    104,077.91/156,164.42 = 56,621.87/x
  3. Step 3: Cross multiply
    104,077.91x = 156,164.42 × 56,621.87
  4. Step 4: Simplify right side
    104,077.91x = 8,842,321,434.21
  5. Step 5: Solve for x
    x = 8,842,321,434.21/104,077.91
  6. Step 6: Final answer
    x = 84,958.67

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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.