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Finding the Fourth Proportional to 472,394,509.20, 708,591,763.80 and 472,394,509.20

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Solution

The fourth proportional to 472,394,509.20, 708,591,763.80 and 472,394,509.20 is: 708,591,763.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    472,394,509.20 : 708,591,763.80 = 472,394,509.20 : x
  2. Step 2: Convert to fraction form
    472,394,509.20/708,591,763.80 = 472,394,509.20/x
  3. Step 3: Cross multiply
    472,394,509.20x = 708,591,763.80 × 472,394,509.20
  4. Step 4: Simplify right side
    472,394,509.20x = 334,734,858,483,463,296
  5. Step 5: Solve for x
    x = 334,734,858,483,463,296/472,394,509.20
  6. Step 6: Final answer
    x = 708,591,763.80

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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.