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Finding the Fourth Proportional to 613,282,529.70, 919,923,794.55 and 368,394,516.90

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Solution

The fourth proportional to 613,282,529.70, 919,923,794.55 and 368,394,516.90 is: 552,591,775.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    613,282,529.70 : 919,923,794.55 = 368,394,516.90 : x
  2. Step 2: Convert to fraction form
    613,282,529.70/919,923,794.55 = 368,394,516.90/x
  3. Step 3: Cross multiply
    613,282,529.70x = 919,923,794.55 × 368,394,516.90
  4. Step 4: Simplify right side
    613,282,529.70x = 338,894,881,878,062,080
  5. Step 5: Solve for x
    x = 338,894,881,878,062,080/613,282,529.70
  6. Step 6: Final answer
    x = 552,591,775.35

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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.