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Finding the Fourth Proportional to 104,450.70, 156,703.05 and 45,272.70

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Solution

The fourth proportional to 104,450.70, 156,703.05 and 45,272.70 is: 67,920.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,450.70 : 156,703.05 = 45,272.70 : x
  2. Step 2: Convert to fraction form
    104,450.70/156,703.05 = 45,272.70/x
  3. Step 3: Cross multiply
    104,450.70x = 156,703.05 × 45,272.70
  4. Step 4: Simplify right side
    104,450.70x = 7,094,370,171.74
  5. Step 5: Solve for x
    x = 7,094,370,171.74/104,450.70
  6. Step 6: Final answer
    x = 67,920.75

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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.