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Finding the Fourth Proportional to 193,886.60, 290,138.70 and 134,443.40

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Solution

The fourth proportional to 193,886.60, 290,138.70 and 134,443.40 is: 201,185.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,886.60 : 290,138.70 = 134,443.40 : x
  2. Step 2: Convert to fraction form
    193,886.60/290,138.70 = 134,443.40/x
  3. Step 3: Cross multiply
    193,886.60x = 290,138.70 × 134,443.40
  4. Step 4: Simplify right side
    193,886.60x = 39,007,233,299.58
  5. Step 5: Solve for x
    x = 39,007,233,299.58/193,886.60
  6. Step 6: Final answer
    x = 201,185.81

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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.