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Finding the Fourth Proportional to 51,674.99, 71,318.61 and 28,709.96

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Solution

The fourth proportional to 51,674.99, 71,318.61 and 28,709.96 is: 39,623.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,674.99 : 71,318.61 = 28,709.96 : x
  2. Step 2: Convert to fraction form
    51,674.99/71,318.61 = 28,709.96/x
  3. Step 3: Cross multiply
    51,674.99x = 71,318.61 × 28,709.96
  4. Step 4: Simplify right side
    51,674.99x = 2,047,554,083.76
  5. Step 5: Solve for x
    x = 2,047,554,083.76/51,674.99
  6. Step 6: Final answer
    x = 39,623.70

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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.