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Finding the Fourth Proportional to 574,089,087.80, 861,133,631.70 and 543,855,999.80

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Solution

The fourth proportional to 574,089,087.80, 861,133,631.70 and 543,855,999.80 is: 815,783,999.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    574,089,087.80 : 861,133,631.70 = 543,855,999.80 : x
  2. Step 2: Convert to fraction form
    574,089,087.80/861,133,631.70 = 543,855,999.80/x
  3. Step 3: Cross multiply
    574,089,087.80x = 861,133,631.70 × 543,855,999.80
  4. Step 4: Simplify right side
    574,089,087.80x = 468,332,692,229,608,448
  5. Step 5: Solve for x
    x = 468,332,692,229,608,448/574,089,087.80
  6. Step 6: Final answer
    x = 815,783,999.70

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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.