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Finding the Fourth Proportional to 201,718.82, 302,490.75 and 68,563.33

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Solution

The fourth proportional to 201,718.82, 302,490.75 and 68,563.33 is: 102,815.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,718.82 : 302,490.75 = 68,563.33 : x
  2. Step 2: Convert to fraction form
    201,718.82/302,490.75 = 68,563.33/x
  3. Step 3: Cross multiply
    201,718.82x = 302,490.75 × 68,563.33
  4. Step 4: Simplify right side
    201,718.82x = 20,739,772,615.08
  5. Step 5: Solve for x
    x = 20,739,772,615.08/201,718.82
  6. Step 6: Final answer
    x = 102,815.26

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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.