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Finding the Fourth Proportional to 217,743,605.60, 326,615,408.40 and 148,767,375.20

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Solution

The fourth proportional to 217,743,605.60, 326,615,408.40 and 148,767,375.20 is: 223,151,062.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    217,743,605.60 : 326,615,408.40 = 148,767,375.20 : x
  2. Step 2: Convert to fraction form
    217,743,605.60/326,615,408.40 = 148,767,375.20/x
  3. Step 3: Cross multiply
    217,743,605.60x = 326,615,408.40 × 148,767,375.20
  4. Step 4: Simplify right side
    217,743,605.60x = 48,589,717,007,544,024
  5. Step 5: Solve for x
    x = 48,589,717,007,544,024/217,743,605.60
  6. Step 6: Final answer
    x = 223,151,062.80

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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.