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Finding the Fourth Proportional to 325,070.73, 487,484.84 and 111,778.31

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Solution

The fourth proportional to 325,070.73, 487,484.84 and 111,778.31 is: 167,625.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,070.73 : 487,484.84 = 111,778.31 : x
  2. Step 2: Convert to fraction form
    325,070.73/487,484.84 = 111,778.31/x
  3. Step 3: Cross multiply
    325,070.73x = 487,484.84 × 111,778.31
  4. Step 4: Simplify right side
    325,070.73x = 54,490,228,569.50
  5. Step 5: Solve for x
    x = 54,490,228,569.50/325,070.73
  6. Step 6: Final answer
    x = 167,625.76

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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.