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Finding the Fourth Proportional to 61,811.88, 93,181.09 and 57,692.24

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Solution

The fourth proportional to 61,811.88, 93,181.09 and 57,692.24 is: 86,970.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,811.88 : 93,181.09 = 57,692.24 : x
  2. Step 2: Convert to fraction form
    61,811.88/93,181.09 = 57,692.24/x
  3. Step 3: Cross multiply
    61,811.88x = 93,181.09 × 57,692.24
  4. Step 4: Simplify right side
    61,811.88x = 5,375,825,807.74
  5. Step 5: Solve for x
    x = 5,375,825,807.74/61,811.88
  6. Step 6: Final answer
    x = 86,970.75

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.