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Finding the Fourth Proportional to 78,987.26, 108,994.70 and 44,993.08

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Solution

The fourth proportional to 78,987.26, 108,994.70 and 44,993.08 is: 62,086.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,987.26 : 108,994.70 = 44,993.08 : x
  2. Step 2: Convert to fraction form
    78,987.26/108,994.70 = 44,993.08/x
  3. Step 3: Cross multiply
    78,987.26x = 108,994.70 × 44,993.08
  4. Step 4: Simplify right side
    78,987.26x = 4,904,006,892.31
  5. Step 5: Solve for x
    x = 4,904,006,892.31/78,987.26
  6. Step 6: Final answer
    x = 62,086.05

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.