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Finding the Fourth Proportional to 391,842.64, 540,801.93 and 238,969.54

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Solution

The fourth proportional to 391,842.64, 540,801.93 and 238,969.54 is: 329,814.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,842.64 : 540,801.93 = 238,969.54 : x
  2. Step 2: Convert to fraction form
    391,842.64/540,801.93 = 238,969.54/x
  3. Step 3: Cross multiply
    391,842.64x = 540,801.93 × 238,969.54
  4. Step 4: Simplify right side
    391,842.64x = 129,235,188,443.21
  5. Step 5: Solve for x
    x = 129,235,188,443.21/391,842.64
  6. Step 6: Final answer
    x = 329,814.00

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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.