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Finding the Fourth Proportional to 354,561.64, 531,842.04 and 105,243.64

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Solution

The fourth proportional to 354,561.64, 531,842.04 and 105,243.64 is: 157,865.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,561.64 : 531,842.04 = 105,243.64 : x
  2. Step 2: Convert to fraction form
    354,561.64/531,842.04 = 105,243.64/x
  3. Step 3: Cross multiply
    354,561.64x = 531,842.04 × 105,243.64
  4. Step 4: Simplify right side
    354,561.64x = 55,972,992,194.63
  5. Step 5: Solve for x
    x = 55,972,992,194.63/354,561.64
  6. Step 6: Final answer
    x = 157,865.34

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.