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Finding the Fourth Proportional to 203,357.32, 305,034.41 and 61,201.98

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Solution

The fourth proportional to 203,357.32, 305,034.41 and 61,201.98 is: 91,802.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    203,357.32 : 305,034.41 = 61,201.98 : x
  2. Step 2: Convert to fraction form
    203,357.32/305,034.41 = 61,201.98/x
  3. Step 3: Cross multiply
    203,357.32x = 305,034.41 × 61,201.98
  4. Step 4: Simplify right side
    203,357.32x = 18,668,710,013.14
  5. Step 5: Solve for x
    x = 18,668,710,013.14/203,357.32
  6. Step 6: Final answer
    x = 91,802.50

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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.