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Finding the Fourth Proportional to 57,628.98, 86,440.41 and 17,647.95

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Solution

The fourth proportional to 57,628.98, 86,440.41 and 17,647.95 is: 26,470.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,628.98 : 86,440.41 = 17,647.95 : x
  2. Step 2: Convert to fraction form
    57,628.98/86,440.41 = 17,647.95/x
  3. Step 3: Cross multiply
    57,628.98x = 86,440.41 × 17,647.95
  4. Step 4: Simplify right side
    57,628.98x = 1,525,496,033.66
  5. Step 5: Solve for x
    x = 1,525,496,033.66/57,628.98
  6. Step 6: Final answer
    x = 26,470.99

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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.