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Finding the Fourth Proportional to 236,717.92, 355,080.12 and 78,946.48

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Solution

The fourth proportional to 236,717.92, 355,080.12 and 78,946.48 is: 118,420.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,717.92 : 355,080.12 = 78,946.48 : x
  2. Step 2: Convert to fraction form
    236,717.92/355,080.12 = 78,946.48/x
  3. Step 3: Cross multiply
    236,717.92x = 355,080.12 × 78,946.48
  4. Step 4: Simplify right side
    236,717.92x = 28,032,325,591.98
  5. Step 5: Solve for x
    x = 28,032,325,591.98/236,717.92
  6. Step 6: Final answer
    x = 118,420.80

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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.