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Finding the Fourth Proportional to 131,106.60, 196,530.30 and 52,115.40

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Solution

The fourth proportional to 131,106.60, 196,530.30 and 52,115.40 is: 78,121.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,106.60 : 196,530.30 = 52,115.40 : x
  2. Step 2: Convert to fraction form
    131,106.60/196,530.30 = 52,115.40/x
  3. Step 3: Cross multiply
    131,106.60x = 196,530.30 × 52,115.40
  4. Step 4: Simplify right side
    131,106.60x = 10,242,255,196.62
  5. Step 5: Solve for x
    x = 10,242,255,196.62/131,106.60
  6. Step 6: Final answer
    x = 78,121.58

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.