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Finding the Fourth Proportional to 421,058.94, 581,060.88 and 227,466.60

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Solution

The fourth proportional to 421,058.94, 581,060.88 and 227,466.60 is: 313,903.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    421,058.94 : 581,060.88 = 227,466.60 : x
  2. Step 2: Convert to fraction form
    421,058.94/581,060.88 = 227,466.60/x
  3. Step 3: Cross multiply
    421,058.94x = 581,060.88 × 227,466.60
  4. Step 4: Simplify right side
    421,058.94x = 132,171,942,766.61
  5. Step 5: Solve for x
    x = 132,171,942,766.61/421,058.94
  6. Step 6: Final answer
    x = 313,903.66

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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.