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Finding the Fourth Proportional to 112,512.60, 168,768.90 and 29,406.60

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Solution

The fourth proportional to 112,512.60, 168,768.90 and 29,406.60 is: 44,109.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,512.60 : 168,768.90 = 29,406.60 : x
  2. Step 2: Convert to fraction form
    112,512.60/168,768.90 = 29,406.60/x
  3. Step 3: Cross multiply
    112,512.60x = 168,768.90 × 29,406.60
  4. Step 4: Simplify right side
    112,512.60x = 4,962,919,534.74
  5. Step 5: Solve for x
    x = 4,962,919,534.74/112,512.60
  6. Step 6: Final answer
    x = 44,109.90

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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.