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Finding the Fourth Proportional to 394,594,230.90, 553,338,915.90 and 394,594,230.90

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Solution

The fourth proportional to 394,594,230.90, 553,338,915.90 and 394,594,230.90 is: 553,338,915.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    394,594,230.90 : 553,338,915.90 = 394,594,230.90 : x
  2. Step 2: Convert to fraction form
    394,594,230.90/553,338,915.90 = 394,594,230.90/x
  3. Step 3: Cross multiply
    394,594,230.90x = 553,338,915.90 × 394,594,230.90
  4. Step 4: Simplify right side
    394,594,230.90x = 218,344,343,946,600,256
  5. Step 5: Solve for x
    x = 218,344,343,946,600,256/394,594,230.90
  6. Step 6: Final answer
    x = 553,338,915.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.