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Finding the Fourth Proportional to 475,347,700.80, 713,021,551.20 and 245,765,188.80

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Solution

The fourth proportional to 475,347,700.80, 713,021,551.20 and 245,765,188.80 is: 368,647,783.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    475,347,700.80 : 713,021,551.20 = 245,765,188.80 : x
  2. Step 2: Convert to fraction form
    475,347,700.80/713,021,551.20 = 245,765,188.80/x
  3. Step 3: Cross multiply
    475,347,700.80x = 713,021,551.20 × 245,765,188.80
  4. Step 4: Simplify right side
    475,347,700.80x = 175,235,876,149,136,896
  5. Step 5: Solve for x
    x = 175,235,876,149,136,896/475,347,700.80
  6. Step 6: Final answer
    x = 368,647,783.20

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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.