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Finding the Fourth Proportional to 79,192.16, 118,751.10 and 45,921.68

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Solution

The fourth proportional to 79,192.16, 118,751.10 and 45,921.68 is: 68,860.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,192.16 : 118,751.10 = 45,921.68 : x
  2. Step 2: Convert to fraction form
    79,192.16/118,751.10 = 45,921.68/x
  3. Step 3: Cross multiply
    79,192.16x = 118,751.10 × 45,921.68
  4. Step 4: Simplify right side
    79,192.16x = 5,453,250,013.85
  5. Step 5: Solve for x
    x = 5,453,250,013.85/79,192.16
  6. Step 6: Final answer
    x = 68,860.98

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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.