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Finding the Fourth Proportional to 74,911.50, 103,377.87 and 43,079.72

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Solution

The fourth proportional to 74,911.50, 103,377.87 and 43,079.72 is: 59,450.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,911.50 : 103,377.87 = 43,079.72 : x
  2. Step 2: Convert to fraction form
    74,911.50/103,377.87 = 43,079.72/x
  3. Step 3: Cross multiply
    74,911.50x = 103,377.87 × 43,079.72
  4. Step 4: Simplify right side
    74,911.50x = 4,453,489,176.91
  5. Step 5: Solve for x
    x = 4,453,489,176.91/74,911.50
  6. Step 6: Final answer
    x = 59,450.01

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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.