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Finding the Fourth Proportional to 319,321,200.60, 478,981,800.90 and 319,321,200.60

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Solution

The fourth proportional to 319,321,200.60, 478,981,800.90 and 319,321,200.60 is: 478,981,800.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    319,321,200.60 : 478,981,800.90 = 319,321,200.60 : x
  2. Step 2: Convert to fraction form
    319,321,200.60/478,981,800.90 = 319,321,200.60/x
  3. Step 3: Cross multiply
    319,321,200.60x = 478,981,800.90 × 319,321,200.60
  4. Step 4: Simplify right side
    319,321,200.60x = 152,949,043,728,938,176
  5. Step 5: Solve for x
    x = 152,949,043,728,938,176/319,321,200.60
  6. Step 6: Final answer
    x = 478,981,800.90

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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.