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Finding the Fourth Proportional to 295,487,999.20, 443,231,998.80 and 291,456,920.80

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Solution

The fourth proportional to 295,487,999.20, 443,231,998.80 and 291,456,920.80 is: 437,185,381.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    295,487,999.20 : 443,231,998.80 = 291,456,920.80 : x
  2. Step 2: Convert to fraction form
    295,487,999.20/443,231,998.80 = 291,456,920.80/x
  3. Step 3: Cross multiply
    295,487,999.20x = 443,231,998.80 × 291,456,920.80
  4. Step 4: Simplify right side
    295,487,999.20x = 129,183,033,570,277,296
  5. Step 5: Solve for x
    x = 129,183,033,570,277,296/295,487,999.20
  6. Step 6: Final answer
    x = 437,185,381.20

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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.