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Finding the Fourth Proportional to 215,053.88, 322,559.97 and 65,295.47

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Solution

The fourth proportional to 215,053.88, 322,559.97 and 65,295.47 is: 97,936.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,053.88 : 322,559.97 = 65,295.47 : x
  2. Step 2: Convert to fraction form
    215,053.88/322,559.97 = 65,295.47/x
  3. Step 3: Cross multiply
    215,053.88x = 322,559.97 × 65,295.47
  4. Step 4: Simplify right side
    215,053.88x = 21,061,705,528.31
  5. Step 5: Solve for x
    x = 21,061,705,528.31/215,053.88
  6. Step 6: Final answer
    x = 97,936.88

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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.