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Finding the Fourth Proportional to 458,995.50, 633,473.19 and 257,791.50

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Solution

The fourth proportional to 458,995.50, 633,473.19 and 257,791.50 is: 355,785.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,995.50 : 633,473.19 = 257,791.50 : x
  2. Step 2: Convert to fraction form
    458,995.50/633,473.19 = 257,791.50/x
  3. Step 3: Cross multiply
    458,995.50x = 633,473.19 × 257,791.50
  4. Step 4: Simplify right side
    458,995.50x = 163,304,003,859.89
  5. Step 5: Solve for x
    x = 163,304,003,859.89/458,995.50
  6. Step 6: Final answer
    x = 355,785.63

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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.