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Finding the Fourth Proportional to 201,358.60, 302,081.10 and 61,131.40

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Solution

The fourth proportional to 201,358.60, 302,081.10 and 61,131.40 is: 91,710.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,358.60 : 302,081.10 = 61,131.40 : x
  2. Step 2: Convert to fraction form
    201,358.60/302,081.10 = 61,131.40/x
  3. Step 3: Cross multiply
    201,358.60x = 302,081.10 × 61,131.40
  4. Step 4: Simplify right side
    201,358.60x = 18,466,640,556.54
  5. Step 5: Solve for x
    x = 18,466,640,556.54/201,358.60
  6. Step 6: Final answer
    x = 91,710.22

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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.