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Finding the Fourth Proportional to 73,953.30, 110,999.55 and 38,918.10

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Solution

The fourth proportional to 73,953.30, 110,999.55 and 38,918.10 is: 58,413.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,953.30 : 110,999.55 = 38,918.10 : x
  2. Step 2: Convert to fraction form
    73,953.30/110,999.55 = 38,918.10/x
  3. Step 3: Cross multiply
    73,953.30x = 110,999.55 × 38,918.10
  4. Step 4: Simplify right side
    73,953.30x = 4,319,891,586.86
  5. Step 5: Solve for x
    x = 4,319,891,586.86/73,953.30
  6. Step 6: Final answer
    x = 58,413.78

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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.