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Finding the Fourth Proportional to 325,005.86, 487,730.22 and 114,643.79

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Solution

The fourth proportional to 325,005.86, 487,730.22 and 114,643.79 is: 172,043.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,005.86 : 487,730.22 = 114,643.79 : x
  2. Step 2: Convert to fraction form
    325,005.86/487,730.22 = 114,643.79/x
  3. Step 3: Cross multiply
    325,005.86x = 487,730.22 × 114,643.79
  4. Step 4: Simplify right side
    325,005.86x = 55,915,242,016.98
  5. Step 5: Solve for x
    x = 55,915,242,016.98/325,005.86
  6. Step 6: Final answer
    x = 172,043.80

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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.