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Finding the Fourth Proportional to 196,798.64, 271,578.72 and 111,913.76

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Solution

The fourth proportional to 196,798.64, 271,578.72 and 111,913.76 is: 154,439.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,798.64 : 271,578.72 = 111,913.76 : x
  2. Step 2: Convert to fraction form
    196,798.64/271,578.72 = 111,913.76/x
  3. Step 3: Cross multiply
    196,798.64x = 271,578.72 × 111,913.76
  4. Step 4: Simplify right side
    196,798.64x = 30,393,395,691.19
  5. Step 5: Solve for x
    x = 30,393,395,691.19/196,798.64
  6. Step 6: Final answer
    x = 154,439.05

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.