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Finding the Fourth Proportional to 201,556.54, 302,378.54 and 61,311.52

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Solution

The fourth proportional to 201,556.54, 302,378.54 and 61,311.52 is: 91,980.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,556.54 : 302,378.54 = 61,311.52 : x
  2. Step 2: Convert to fraction form
    201,556.54/302,378.54 = 61,311.52/x
  3. Step 3: Cross multiply
    201,556.54x = 302,378.54 × 61,311.52
  4. Step 4: Simplify right side
    201,556.54x = 18,539,287,902.78
  5. Step 5: Solve for x
    x = 18,539,287,902.78/201,556.54
  6. Step 6: Final answer
    x = 91,980.58

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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.