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Finding the Fourth Proportional to 231,485.64, 347,260.74 and 71,574.63

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Solution

The fourth proportional to 231,485.64, 347,260.74 and 71,574.63 is: 107,371.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    231,485.64 : 347,260.74 = 71,574.63 : x
  2. Step 2: Convert to fraction form
    231,485.64/347,260.74 = 71,574.63/x
  3. Step 3: Cross multiply
    231,485.64x = 347,260.74 × 71,574.63
  4. Step 4: Simplify right side
    231,485.64x = 24,855,058,979.03
  5. Step 5: Solve for x
    x = 24,855,058,979.03/231,485.64
  6. Step 6: Final answer
    x = 107,371.93

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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.