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Finding the Fourth Proportional to 228,602.74, 315,460.82 and 126,621.32

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Solution

The fourth proportional to 228,602.74, 315,460.82 and 126,621.32 is: 174,731.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    228,602.74 : 315,460.82 = 126,621.32 : x
  2. Step 2: Convert to fraction form
    228,602.74/315,460.82 = 126,621.32/x
  3. Step 3: Cross multiply
    228,602.74x = 315,460.82 × 126,621.32
  4. Step 4: Simplify right side
    228,602.74x = 39,944,065,436.68
  5. Step 5: Solve for x
    x = 39,944,065,436.68/228,602.74
  6. Step 6: Final answer
    x = 174,731.35

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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.