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Finding the Fourth Proportional to 104,555.81, 156,745.54 and 45,346.88

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Solution

The fourth proportional to 104,555.81, 156,745.54 and 45,346.88 is: 67,982.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,555.81 : 156,745.54 = 45,346.88 : x
  2. Step 2: Convert to fraction form
    104,555.81/156,745.54 = 45,346.88/x
  3. Step 3: Cross multiply
    104,555.81x = 156,745.54 × 45,346.88
  4. Step 4: Simplify right side
    104,555.81x = 7,107,920,182.45
  5. Step 5: Solve for x
    x = 7,107,920,182.45/104,555.81
  6. Step 6: Final answer
    x = 67,982.07

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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.