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Finding the Fourth Proportional to 58,418.64, 87,628.68 and 16,866

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Solution

The fourth proportional to 58,418.64, 87,628.68 and 16,866 is: 25,299.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,418.64 : 87,628.68 = 16,866 : x
  2. Step 2: Convert to fraction form
    58,418.64/87,628.68 = 16,866/x
  3. Step 3: Cross multiply
    58,418.64x = 87,628.68 × 16,866
  4. Step 4: Simplify right side
    58,418.64x = 1,477,945,316.88
  5. Step 5: Solve for x
    x = 1,477,945,316.88/58,418.64
  6. Step 6: Final answer
    x = 25,299.21

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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.