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Finding the Fourth Proportional to 229,331,346.90, 321,970,878.30 and 229,331,346.90

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Solution

The fourth proportional to 229,331,346.90, 321,970,878.30 and 229,331,346.90 is: 321,970,878.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    229,331,346.90 : 321,970,878.30 = 229,331,346.90 : x
  2. Step 2: Convert to fraction form
    229,331,346.90/321,970,878.30 = 229,331,346.90/x
  3. Step 3: Cross multiply
    229,331,346.90x = 321,970,878.30 × 229,331,346.90
  4. Step 4: Simplify right side
    229,331,346.90x = 73,838,015,183,114,992
  5. Step 5: Solve for x
    x = 73,838,015,183,114,992/229,331,346.90
  6. Step 6: Final answer
    x = 321,970,878.30

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.