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Finding the Fourth Proportional to 206,702,117.80, 310,053,176.70 and 61,122,713.20

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Solution

The fourth proportional to 206,702,117.80, 310,053,176.70 and 61,122,713.20 is: 91,684,069.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    206,702,117.80 : 310,053,176.70 = 61,122,713.20 : x
  2. Step 2: Convert to fraction form
    206,702,117.80/310,053,176.70 = 61,122,713.20/x
  3. Step 3: Cross multiply
    206,702,117.80x = 310,053,176.70 × 61,122,713.20
  4. Step 4: Simplify right side
    206,702,117.80x = 18,951,291,396,183,024
  5. Step 5: Solve for x
    x = 18,951,291,396,183,024/206,702,117.80
  6. Step 6: Final answer
    x = 91,684,069.80

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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.