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Finding the Fourth Proportional to 131,408.60, 197,112.90 and 116,893.40

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Solution

The fourth proportional to 131,408.60, 197,112.90 and 116,893.40 is: 175,340.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,408.60 : 197,112.90 = 116,893.40 : x
  2. Step 2: Convert to fraction form
    131,408.60/197,112.90 = 116,893.40/x
  3. Step 3: Cross multiply
    131,408.60x = 197,112.90 × 116,893.40
  4. Step 4: Simplify right side
    131,408.60x = 23,041,197,064.86
  5. Step 5: Solve for x
    x = 23,041,197,064.86/131,408.60
  6. Step 6: Final answer
    x = 175,340.10

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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.