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Finding the Fourth Proportional to 62,986.41, 86,893.14 and 42,561.87

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Solution

The fourth proportional to 62,986.41, 86,893.14 and 42,561.87 is: 58,716.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,986.41 : 86,893.14 = 42,561.87 : x
  2. Step 2: Convert to fraction form
    62,986.41/86,893.14 = 42,561.87/x
  3. Step 3: Cross multiply
    62,986.41x = 86,893.14 × 42,561.87
  4. Step 4: Simplify right side
    62,986.41x = 3,698,334,528.57
  5. Step 5: Solve for x
    x = 3,698,334,528.57/62,986.41
  6. Step 6: Final answer
    x = 58,716.39

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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.