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Finding the Fourth Proportional to 196,993,191.80, 295,489,787.70 and 115,363,854.20

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Solution

The fourth proportional to 196,993,191.80, 295,489,787.70 and 115,363,854.20 is: 173,045,781.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    196,993,191.80 : 295,489,787.70 = 115,363,854.20 : x
  2. Step 2: Convert to fraction form
    196,993,191.80/295,489,787.70 = 115,363,854.20/x
  3. Step 3: Cross multiply
    196,993,191.80x = 295,489,787.70 × 115,363,854.20
  4. Step 4: Simplify right side
    196,993,191.80x = 34,088,840,785,811,752
  5. Step 5: Solve for x
    x = 34,088,840,785,811,752/196,993,191.80
  6. Step 6: Final answer
    x = 173,045,781.30

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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.