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Finding the Fourth Proportional to 246,708.78, 370,076.62 and 78,216.92

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Solution

The fourth proportional to 246,708.78, 370,076.62 and 78,216.92 is: 117,329.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    246,708.78 : 370,076.62 = 78,216.92 : x
  2. Step 2: Convert to fraction form
    246,708.78/370,076.62 = 78,216.92/x
  3. Step 3: Cross multiply
    246,708.78x = 370,076.62 × 78,216.92
  4. Step 4: Simplify right side
    246,708.78x = 28,946,251,530.03
  5. Step 5: Solve for x
    x = 28,946,251,530.03/246,708.78
  6. Step 6: Final answer
    x = 117,329.64

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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.