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Finding the Fourth Proportional to 652,100,449.80, 978,150,674.70 and 434,422,216.20

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Solution

The fourth proportional to 652,100,449.80, 978,150,674.70 and 434,422,216.20 is: 651,633,324.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    652,100,449.80 : 978,150,674.70 = 434,422,216.20 : x
  2. Step 2: Convert to fraction form
    652,100,449.80/978,150,674.70 = 434,422,216.20/x
  3. Step 3: Cross multiply
    652,100,449.80x = 978,150,674.70 × 434,422,216.20
  4. Step 4: Simplify right side
    652,100,449.80x = 424,930,383,880,699,264
  5. Step 5: Solve for x
    x = 424,930,383,880,699,264/652,100,449.80
  6. Step 6: Final answer
    x = 651,633,324.30

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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.