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Finding the Fourth Proportional to 62,605.71, 86,408.57 and 57,561.91

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Solution

The fourth proportional to 62,605.71, 86,408.57 and 57,561.91 is: 79,447.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,605.71 : 86,408.57 = 57,561.91 : x
  2. Step 2: Convert to fraction form
    62,605.71/86,408.57 = 57,561.91/x
  3. Step 3: Cross multiply
    62,605.71x = 86,408.57 × 57,561.91
  4. Step 4: Simplify right side
    62,605.71x = 4,973,842,257.45
  5. Step 5: Solve for x
    x = 4,973,842,257.45/62,605.71
  6. Step 6: Final answer
    x = 79,447.10

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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.