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Finding the Fourth Proportional to 60,809.72, 91,256.11 and 21,366.84

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Solution

The fourth proportional to 60,809.72, 91,256.11 and 21,366.84 is: 32,064.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,809.72 : 91,256.11 = 21,366.84 : x
  2. Step 2: Convert to fraction form
    60,809.72/91,256.11 = 21,366.84/x
  3. Step 3: Cross multiply
    60,809.72x = 91,256.11 × 21,366.84
  4. Step 4: Simplify right side
    60,809.72x = 1,949,854,138.28
  5. Step 5: Solve for x
    x = 1,949,854,138.28/60,809.72
  6. Step 6: Final answer
    x = 32,064.84

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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.