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Finding the Fourth Proportional to 398,105,762.56, 548,135,686.56 and 338,449,672.96

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Solution

The fourth proportional to 398,105,762.56, 548,135,686.56 and 338,449,672.96 is: 465,997,635.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    398,105,762.56 : 548,135,686.56 = 338,449,672.96 : x
  2. Step 2: Convert to fraction form
    398,105,762.56/548,135,686.56 = 338,449,672.96/x
  3. Step 3: Cross multiply
    398,105,762.56x = 548,135,686.56 × 338,449,672.96
  4. Step 4: Simplify right side
    398,105,762.56x = 185,516,343,853,937,024
  5. Step 5: Solve for x
    x = 185,516,343,853,937,024/398,105,762.56
  6. Step 6: Final answer
    x = 465,997,635.05

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.