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Finding the Fourth Proportional to 201,978.52, 302,968.54 and 61,736.60

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Solution

The fourth proportional to 201,978.52, 302,968.54 and 61,736.60 is: 92,605.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    201,978.52 : 302,968.54 = 61,736.60 : x
  2. Step 2: Convert to fraction form
    201,978.52/302,968.54 = 61,736.60/x
  3. Step 3: Cross multiply
    201,978.52x = 302,968.54 × 61,736.60
  4. Step 4: Simplify right side
    201,978.52x = 18,704,247,566.56
  5. Step 5: Solve for x
    x = 18,704,247,566.56/201,978.52
  6. Step 6: Final answer
    x = 92,605.13

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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.