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Finding the Fourth Proportional to 228,596.63, 315,460.02 and 126,621.76

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Solution

The fourth proportional to 228,596.63, 315,460.02 and 126,621.76 is: 174,736.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,596.63 : 315,460.02 = 126,621.76 : x
  2. Step 2: Convert to fraction form
    228,596.63/315,460.02 = 126,621.76/x
  3. Step 3: Cross multiply
    228,596.63x = 315,460.02 × 126,621.76
  4. Step 4: Simplify right side
    228,596.63x = 39,944,101,620.23
  5. Step 5: Solve for x
    x = 39,944,101,620.23/228,596.63
  6. Step 6: Final answer
    x = 174,736.18

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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.