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Finding the Fourth Proportional to 352,764,793.88, 486,842,684.40 and 211,641,325.28

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Solution

The fourth proportional to 352,764,793.88, 486,842,684.40 and 211,641,325.28 is: 292,081,388.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    352,764,793.88 : 486,842,684.40 = 211,641,325.28 : x
  2. Step 2: Convert to fraction form
    352,764,793.88/486,842,684.40 = 211,641,325.28/x
  3. Step 3: Cross multiply
    352,764,793.88x = 486,842,684.40 × 211,641,325.28
  4. Step 4: Simplify right side
    352,764,793.88x = 103,036,030,929,288,784
  5. Step 5: Solve for x
    x = 103,036,030,929,288,784/352,764,793.88
  6. Step 6: Final answer
    x = 292,081,388.84

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.