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Finding the Fourth Proportional to 351,536.78, 527,305.88 and 127,055.75

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Solution

The fourth proportional to 351,536.78, 527,305.88 and 127,055.75 is: 190,583.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    351,536.78 : 527,305.88 = 127,055.75 : x
  2. Step 2: Convert to fraction form
    351,536.78/527,305.88 = 127,055.75/x
  3. Step 3: Cross multiply
    351,536.78x = 527,305.88 × 127,055.75
  4. Step 4: Simplify right side
    351,536.78x = 66,997,241,743.92
  5. Step 5: Solve for x
    x = 66,997,241,743.92/351,536.78
  6. Step 6: Final answer
    x = 190,583.87

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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.