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Finding the Fourth Proportional to 446,806.60, 616,387.62 and 395,871.28

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Solution

The fourth proportional to 446,806.60, 616,387.62 and 395,871.28 is: 546,120.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    446,806.60 : 616,387.62 = 395,871.28 : x
  2. Step 2: Convert to fraction form
    446,806.60/616,387.62 = 395,871.28/x
  3. Step 3: Cross multiply
    446,806.60x = 616,387.62 × 395,871.28
  4. Step 4: Simplify right side
    446,806.60x = 244,010,156,105.55
  5. Step 5: Solve for x
    x = 244,010,156,105.55/446,806.60
  6. Step 6: Final answer
    x = 546,120.30

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Why These Related Problems?

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