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Finding the Fourth Proportional to 62,118.60, 85,701.81 and 40,620.93

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Solution

The fourth proportional to 62,118.60, 85,701.81 and 40,620.93 is: 56,042.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,118.60 : 85,701.81 = 40,620.93 : x
  2. Step 2: Convert to fraction form
    62,118.60/85,701.81 = 40,620.93/x
  3. Step 3: Cross multiply
    62,118.60x = 85,701.81 × 40,620.93
  4. Step 4: Simplify right side
    62,118.60x = 3,481,287,224.88
  5. Step 5: Solve for x
    x = 3,481,287,224.88/62,118.60
  6. Step 6: Final answer
    x = 56,042.59

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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.