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Finding the Fourth Proportional to 65,849.94, 98,790.63 and 21,476.73

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Solution

The fourth proportional to 65,849.94, 98,790.63 and 21,476.73 is: 32,220.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,849.94 : 98,790.63 = 21,476.73 : x
  2. Step 2: Convert to fraction form
    65,849.94/98,790.63 = 21,476.73/x
  3. Step 3: Cross multiply
    65,849.94x = 98,790.63 × 21,476.73
  4. Step 4: Simplify right side
    65,849.94x = 2,121,699,687.04
  5. Step 5: Solve for x
    x = 2,121,699,687.04/65,849.94
  6. Step 6: Final answer
    x = 32,220.22

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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.