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Finding the Fourth Proportional to 199,640,801.80, 299,461,202.70 and 191,704,616.20

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Solution

The fourth proportional to 199,640,801.80, 299,461,202.70 and 191,704,616.20 is: 287,556,924.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    199,640,801.80 : 299,461,202.70 = 191,704,616.20 : x
  2. Step 2: Convert to fraction form
    199,640,801.80/299,461,202.70 = 191,704,616.20/x
  3. Step 3: Cross multiply
    199,640,801.80x = 299,461,202.70 × 191,704,616.20
  4. Step 4: Simplify right side
    199,640,801.80x = 57,408,094,930,393,896
  5. Step 5: Solve for x
    x = 57,408,094,930,393,896/199,640,801.80
  6. Step 6: Final answer
    x = 287,556,924.30

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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.