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Finding the Fourth Proportional to 104,596.88, 156,921.72 and 45,418.16

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Solution

The fourth proportional to 104,596.88, 156,921.72 and 45,418.16 is: 68,138.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,596.88 : 156,921.72 = 45,418.16 : x
  2. Step 2: Convert to fraction form
    104,596.88/156,921.72 = 45,418.16/x
  3. Step 3: Cross multiply
    104,596.88x = 156,921.72 × 45,418.16
  4. Step 4: Simplify right side
    104,596.88x = 7,127,095,786.44
  5. Step 5: Solve for x
    x = 7,127,095,786.44/104,596.88
  6. Step 6: Final answer
    x = 68,138.70

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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.