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Finding the Fourth Proportional to 112,416.80, 168,625.20 and 29,310.80

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Solution

The fourth proportional to 112,416.80, 168,625.20 and 29,310.80 is: 43,966.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,416.80 : 168,625.20 = 29,310.80 : x
  2. Step 2: Convert to fraction form
    112,416.80/168,625.20 = 29,310.80/x
  3. Step 3: Cross multiply
    112,416.80x = 168,625.20 × 29,310.80
  4. Step 4: Simplify right side
    112,416.80x = 4,942,539,512.16
  5. Step 5: Solve for x
    x = 4,942,539,512.16/112,416.80
  6. Step 6: Final answer
    x = 43,966.20

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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.