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Finding the Fourth Proportional to 325,503.86, 487,672.59 and 115,007.54

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Solution

The fourth proportional to 325,503.86, 487,672.59 and 115,007.54 is: 172,305.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    325,503.86 : 487,672.59 = 115,007.54 : x
  2. Step 2: Convert to fraction form
    325,503.86/487,672.59 = 115,007.54/x
  3. Step 3: Cross multiply
    325,503.86x = 487,672.59 × 115,007.54
  4. Step 4: Simplify right side
    325,503.86x = 56,086,024,901.33
  5. Step 5: Solve for x
    x = 56,086,024,901.33/325,503.86
  6. Step 6: Final answer
    x = 172,305.25

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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.