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Finding the Fourth Proportional to 60,788.80, 91,193.28 and 21,335.68

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Solution

The fourth proportional to 60,788.80, 91,193.28 and 21,335.68 is: 32,007.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,788.80 : 91,193.28 = 21,335.68 : x
  2. Step 2: Convert to fraction form
    60,788.80/91,193.28 = 21,335.68/x
  3. Step 3: Cross multiply
    60,788.80x = 91,193.28 × 21,335.68
  4. Step 4: Simplify right side
    60,788.80x = 1,945,670,640.23
  5. Step 5: Solve for x
    x = 1,945,670,640.23/60,788.80
  6. Step 6: Final answer
    x = 32,007.06

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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.