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Finding the Fourth Proportional to 220,851,470.80, 331,274,095.80 and 99,682,728.40

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Solution

The fourth proportional to 220,851,470.80, 331,274,095.80 and 99,682,728.40 is: 149,522,688.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    220,851,470.80 : 331,274,095.80 = 99,682,728.40 : x
  2. Step 2: Convert to fraction form
    220,851,470.80/331,274,095.80 = 99,682,728.40/x
  3. Step 3: Cross multiply
    220,851,470.80x = 331,274,095.80 × 99,682,728.40
  4. Step 4: Simplify right side
    220,851,470.80x = 33,022,305,717,586,984
  5. Step 5: Solve for x
    x = 33,022,305,717,586,984/220,851,470.80
  6. Step 6: Final answer
    x = 149,522,688.70

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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.