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Finding the Fourth Proportional to 131,716.40, 197,137.20 and 131,716.40

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Solution

The fourth proportional to 131,716.40, 197,137.20 and 131,716.40 is: 197,137.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,716.40 : 197,137.20 = 131,716.40 : x
  2. Step 2: Convert to fraction form
    131,716.40/197,137.20 = 131,716.40/x
  3. Step 3: Cross multiply
    131,716.40x = 197,137.20 × 131,716.40
  4. Step 4: Simplify right side
    131,716.40x = 25,966,202,290.08
  5. Step 5: Solve for x
    x = 25,966,202,290.08/131,716.40
  6. Step 6: Final answer
    x = 197,137.20

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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.