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Finding the Fourth Proportional to 196,818, 271,607.40 and 111,934.96

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Solution

The fourth proportional to 196,818, 271,607.40 and 111,934.96 is: 154,469.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,818 : 271,607.40 = 111,934.96 : x
  2. Step 2: Convert to fraction form
    196,818/271,607.40 = 111,934.96/x
  3. Step 3: Cross multiply
    196,818x = 271,607.40 × 111,934.96
  4. Step 4: Simplify right side
    196,818x = 30,402,363,454.70
  5. Step 5: Solve for x
    x = 30,402,363,454.70/196,818
  6. Step 6: Final answer
    x = 154,469.43

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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.