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Finding the Fourth Proportional to 118,767.68, 178,103.68 and 42,844.64

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Solution

The fourth proportional to 118,767.68, 178,103.68 and 42,844.64 is: 64,249.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    118,767.68 : 178,103.68 = 42,844.64 : x
  2. Step 2: Convert to fraction form
    118,767.68/178,103.68 = 42,844.64/x
  3. Step 3: Cross multiply
    118,767.68x = 178,103.68 × 42,844.64
  4. Step 4: Simplify right side
    118,767.68x = 7,630,788,052.28
  5. Step 5: Solve for x
    x = 7,630,788,052.28/118,767.68
  6. Step 6: Final answer
    x = 64,249.70

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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.