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Finding the Fourth Proportional to 135,903.60, 203,855.40 and 114,908.40

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Solution

The fourth proportional to 135,903.60, 203,855.40 and 114,908.40 is: 172,362.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    135,903.60 : 203,855.40 = 114,908.40 : x
  2. Step 2: Convert to fraction form
    135,903.60/203,855.40 = 114,908.40/x
  3. Step 3: Cross multiply
    135,903.60x = 203,855.40 × 114,908.40
  4. Step 4: Simplify right side
    135,903.60x = 23,424,697,845.36
  5. Step 5: Solve for x
    x = 23,424,697,845.36/135,903.60
  6. Step 6: Final answer
    x = 172,362.60

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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.