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Finding the Fourth Proportional to 395,958.88, 546,382.33 and 243,003.52

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Solution

The fourth proportional to 395,958.88, 546,382.33 and 243,003.52 is: 335,319.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,958.88 : 546,382.33 = 243,003.52 : x
  2. Step 2: Convert to fraction form
    395,958.88/546,382.33 = 243,003.52/x
  3. Step 3: Cross multiply
    395,958.88x = 546,382.33 × 243,003.52
  4. Step 4: Simplify right side
    395,958.88x = 132,772,829,455.80
  5. Step 5: Solve for x
    x = 132,772,829,455.80/395,958.88
  6. Step 6: Final answer
    x = 335,319.74

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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.