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Finding the Fourth Proportional to 60,722.64, 91,096.92 and 21,282.16

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Solution

The fourth proportional to 60,722.64, 91,096.92 and 21,282.16 is: 31,927.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,722.64 : 91,096.92 = 21,282.16 : x
  2. Step 2: Convert to fraction form
    60,722.64/91,096.92 = 21,282.16/x
  3. Step 3: Cross multiply
    60,722.64x = 91,096.92 × 21,282.16
  4. Step 4: Simplify right side
    60,722.64x = 1,938,739,226.95
  5. Step 5: Solve for x
    x = 1,938,739,226.95/60,722.64
  6. Step 6: Final answer
    x = 31,927.78

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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.