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Finding the Fourth Proportional to 33,128.80, 49,693.20 and 29,903.20

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Solution

The fourth proportional to 33,128.80, 49,693.20 and 29,903.20 is: 44,854.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    33,128.80 : 49,693.20 = 29,903.20 : x
  2. Step 2: Convert to fraction form
    33,128.80/49,693.20 = 29,903.20/x
  3. Step 3: Cross multiply
    33,128.80x = 49,693.20 × 29,903.20
  4. Step 4: Simplify right side
    33,128.80x = 1,485,985,698.24
  5. Step 5: Solve for x
    x = 1,485,985,698.24/33,128.80
  6. Step 6: Final answer
    x = 44,854.80

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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.