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Finding the Fourth Proportional to 220,498.17, 330,778.17 and 70,703.25

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Solution

The fourth proportional to 220,498.17, 330,778.17 and 70,703.25 is: 106,064.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,498.17 : 330,778.17 = 70,703.25 : x
  2. Step 2: Convert to fraction form
    220,498.17/330,778.17 = 70,703.25/x
  3. Step 3: Cross multiply
    220,498.17x = 330,778.17 × 70,703.25
  4. Step 4: Simplify right side
    220,498.17x = 23,387,091,648.05
  5. Step 5: Solve for x
    x = 23,387,091,648.05/220,498.17
  6. Step 6: Final answer
    x = 106,064.79

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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.