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Finding the Fourth Proportional to 60,774.60, 91,202.66 and 21,331.82

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Solution

The fourth proportional to 60,774.60, 91,202.66 and 21,331.82 is: 32,012.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,774.60 : 91,202.66 = 21,331.82 : x
  2. Step 2: Convert to fraction form
    60,774.60/91,202.66 = 21,331.82/x
  3. Step 3: Cross multiply
    60,774.60x = 91,202.66 × 21,331.82
  4. Step 4: Simplify right side
    60,774.60x = 1,945,518,726.64
  5. Step 5: Solve for x
    x = 1,945,518,726.64/60,774.60
  6. Step 6: Final answer
    x = 32,012.04

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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.