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Finding the Fourth Proportional to 395,348.41, 545,581.05 and 214,060.47

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Solution

The fourth proportional to 395,348.41, 545,581.05 and 214,060.47 is: 295,403.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,348.41 : 545,581.05 = 214,060.47 : x
  2. Step 2: Convert to fraction form
    395,348.41/545,581.05 = 214,060.47/x
  3. Step 3: Cross multiply
    395,348.41x = 545,581.05 × 214,060.47
  4. Step 4: Simplify right side
    395,348.41x = 116,787,335,986.09
  5. Step 5: Solve for x
    x = 116,787,335,986.09/395,348.41
  6. Step 6: Final answer
    x = 295,403.58

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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.