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Finding the Fourth Proportional to 69,008,987.80, 103,425,564.30 and 36,676,379.80

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Solution

The fourth proportional to 69,008,987.80, 103,425,564.30 and 36,676,379.80 is: 54,967,844.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,008,987.80 : 103,425,564.30 = 36,676,379.80 : x
  2. Step 2: Convert to fraction form
    69,008,987.80/103,425,564.30 = 36,676,379.80/x
  3. Step 3: Cross multiply
    69,008,987.80x = 103,425,564.30 × 36,676,379.80
  4. Step 4: Simplify right side
    69,008,987.80x = 3,793,275,277,296,120.50
  5. Step 5: Solve for x
    x = 3,793,275,277,296,120.50/69,008,987.80
  6. Step 6: Final answer
    x = 54,967,844.02

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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.