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Finding the Fourth Proportional to 74,987.86, 103,484.52 and 44,775.84

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Solution

The fourth proportional to 74,987.86, 103,484.52 and 44,775.84 is: 61,791.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,987.86 : 103,484.52 = 44,775.84 : x
  2. Step 2: Convert to fraction form
    74,987.86/103,484.52 = 44,775.84/x
  3. Step 3: Cross multiply
    74,987.86x = 103,484.52 × 44,775.84
  4. Step 4: Simplify right side
    74,987.86x = 4,633,606,310.00
  5. Step 5: Solve for x
    x = 4,633,606,310.00/74,987.86
  6. Step 6: Final answer
    x = 61,791.42

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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.