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Finding the Fourth Proportional to 61,486.80, 92,171.16 and 39,237.36

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Solution

The fourth proportional to 61,486.80, 92,171.16 and 39,237.36 is: 58,818.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,486.80 : 92,171.16 = 39,237.36 : x
  2. Step 2: Convert to fraction form
    61,486.80/92,171.16 = 39,237.36/x
  3. Step 3: Cross multiply
    61,486.80x = 92,171.16 × 39,237.36
  4. Step 4: Simplify right side
    61,486.80x = 3,616,552,986.54
  5. Step 5: Solve for x
    x = 3,616,552,986.54/61,486.80
  6. Step 6: Final answer
    x = 58,818.36

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.