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Finding the Fourth Proportional to 112,458.22, 168,604 and 68,074.48

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Solution

The fourth proportional to 112,458.22, 168,604 and 68,074.48 is: 102,061.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,458.22 : 168,604 = 68,074.48 : x
  2. Step 2: Convert to fraction form
    112,458.22/168,604 = 68,074.48/x
  3. Step 3: Cross multiply
    112,458.22x = 168,604 × 68,074.48
  4. Step 4: Simplify right side
    112,458.22x = 11,477,629,625.92
  5. Step 5: Solve for x
    x = 11,477,629,625.92/112,458.22
  6. Step 6: Final answer
    x = 102,061.28

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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.