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Finding the Fourth Proportional to 135,897.48, 203,889.96 and 56,990.52

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Solution

The fourth proportional to 135,897.48, 203,889.96 and 56,990.52 is: 85,504.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,897.48 : 203,889.96 = 56,990.52 : x
  2. Step 2: Convert to fraction form
    135,897.48/203,889.96 = 56,990.52/x
  3. Step 3: Cross multiply
    135,897.48x = 203,889.96 × 56,990.52
  4. Step 4: Simplify right side
    135,897.48x = 11,619,794,843.18
  5. Step 5: Solve for x
    x = 11,619,794,843.18/135,897.48
  6. Step 6: Final answer
    x = 85,504.12

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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.