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Finding the Fourth Proportional to 209,952,853.20, 314,929,279.80 and 73,589,029.20

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Solution

The fourth proportional to 209,952,853.20, 314,929,279.80 and 73,589,029.20 is: 110,383,543.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,952,853.20 : 314,929,279.80 = 73,589,029.20 : x
  2. Step 2: Convert to fraction form
    209,952,853.20/314,929,279.80 = 73,589,029.20/x
  3. Step 3: Cross multiply
    209,952,853.20x = 314,929,279.80 × 73,589,029.20
  4. Step 4: Simplify right side
    209,952,853.20x = 23,175,339,967,137,172
  5. Step 5: Solve for x
    x = 23,175,339,967,137,172/209,952,853.20
  6. Step 6: Final answer
    x = 110,383,543.80

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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.