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Finding the Fourth Proportional to 135,938.90, 203,908.35 and 135,938.90

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Solution

The fourth proportional to 135,938.90, 203,908.35 and 135,938.90 is: 203,908.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,938.90 : 203,908.35 = 135,938.90 : x
  2. Step 2: Convert to fraction form
    135,938.90/203,908.35 = 135,938.90/x
  3. Step 3: Cross multiply
    135,938.90x = 203,908.35 × 135,938.90
  4. Step 4: Simplify right side
    135,938.90x = 27,719,076,799.82
  5. Step 5: Solve for x
    x = 27,719,076,799.82/135,938.90
  6. Step 6: Final answer
    x = 203,908.35

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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.