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Finding the Fourth Proportional to 395,958.38, 546,381.64 and 243,003.01

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Solution

The fourth proportional to 395,958.38, 546,381.64 and 243,003.01 is: 335,319.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    395,958.38 : 546,381.64 = 243,003.01 : x
  2. Step 2: Convert to fraction form
    395,958.38/546,381.64 = 243,003.01/x
  3. Step 3: Cross multiply
    395,958.38x = 546,381.64 × 243,003.01
  4. Step 4: Simplify right side
    395,958.38x = 132,772,383,128.74
  5. Step 5: Solve for x
    x = 132,772,383,128.74/395,958.38
  6. Step 6: Final answer
    x = 335,319.04

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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.