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Finding the Fourth Proportional to 60,786.63, 91,189.08 and 21,336.84

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Solution

The fourth proportional to 60,786.63, 91,189.08 and 21,336.84 is: 32,008.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,786.63 : 91,189.08 = 21,336.84 : x
  2. Step 2: Convert to fraction form
    60,786.63/91,189.08 = 21,336.84/x
  3. Step 3: Cross multiply
    60,786.63x = 91,189.08 × 21,336.84
  4. Step 4: Simplify right side
    60,786.63x = 1,945,686,809.71
  5. Step 5: Solve for x
    x = 1,945,686,809.71/60,786.63
  6. Step 6: Final answer
    x = 32,008.47

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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.