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Finding the Fourth Proportional to 118,843.02, 178,144.57 and 74,500.92

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Solution

The fourth proportional to 118,843.02, 178,144.57 and 74,500.92 is: 111,676.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,843.02 : 178,144.57 = 74,500.92 : x
  2. Step 2: Convert to fraction form
    118,843.02/178,144.57 = 74,500.92/x
  3. Step 3: Cross multiply
    118,843.02x = 178,144.57 × 74,500.92
  4. Step 4: Simplify right side
    118,843.02x = 13,271,933,985.50
  5. Step 5: Solve for x
    x = 13,271,933,985.50/118,843.02
  6. Step 6: Final answer
    x = 111,676.18

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1.5x scale

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.