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Finding the Fourth Proportional to 168,181,203.80, 252,271,805.70 and 165,913,722.20

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Solution

The fourth proportional to 168,181,203.80, 252,271,805.70 and 165,913,722.20 is: 248,870,583.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    168,181,203.80 : 252,271,805.70 = 165,913,722.20 : x
  2. Step 2: Convert to fraction form
    168,181,203.80/252,271,805.70 = 165,913,722.20/x
  3. Step 3: Cross multiply
    168,181,203.80x = 252,271,805.70 × 165,913,722.20
  4. Step 4: Simplify right side
    168,181,203.80x = 41,855,354,289,802,168
  5. Step 5: Solve for x
    x = 41,855,354,289,802,168/168,181,203.80
  6. Step 6: Final answer
    x = 248,870,583.30

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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.