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Finding the Fourth Proportional to 121,788.87, 182,797.20 and 61,860.21

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Solution

The fourth proportional to 121,788.87, 182,797.20 and 61,860.21 is: 92,848.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,788.87 : 182,797.20 = 61,860.21 : x
  2. Step 2: Convert to fraction form
    121,788.87/182,797.20 = 61,860.21/x
  3. Step 3: Cross multiply
    121,788.87x = 182,797.20 × 61,860.21
  4. Step 4: Simplify right side
    121,788.87x = 11,307,873,179.41
  5. Step 5: Solve for x
    x = 11,307,873,179.41/121,788.87
  6. Step 6: Final answer
    x = 92,848.17

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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.