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Finding the Fourth Proportional to 122,934.60, 184,401.90 and 75,695.40

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Solution

The fourth proportional to 122,934.60, 184,401.90 and 75,695.40 is: 113,543.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    122,934.60 : 184,401.90 = 75,695.40 : x
  2. Step 2: Convert to fraction form
    122,934.60/184,401.90 = 75,695.40/x
  3. Step 3: Cross multiply
    122,934.60x = 184,401.90 × 75,695.40
  4. Step 4: Simplify right side
    122,934.60x = 13,958,375,581.26
  5. Step 5: Solve for x
    x = 13,958,375,581.26/122,934.60
  6. Step 6: Final answer
    x = 113,543.10

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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.