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Finding the Fourth Proportional to 236,538.54, 354,864.30 and 78,768.36

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Solution

The fourth proportional to 236,538.54, 354,864.30 and 78,768.36 is: 118,171.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,538.54 : 354,864.30 = 78,768.36 : x
  2. Step 2: Convert to fraction form
    236,538.54/354,864.30 = 78,768.36/x
  3. Step 3: Cross multiply
    236,538.54x = 354,864.30 × 78,768.36
  4. Step 4: Simplify right side
    236,538.54x = 27,952,078,933.55
  5. Step 5: Solve for x
    x = 27,952,078,933.55/236,538.54
  6. Step 6: Final answer
    x = 118,171.35

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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.