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Finding the Fourth Proportional to 38,868.02, 58,320.47 and 16,687.71

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Solution

The fourth proportional to 38,868.02, 58,320.47 and 16,687.71 is: 25,039.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,868.02 : 58,320.47 = 16,687.71 : x
  2. Step 2: Convert to fraction form
    38,868.02/58,320.47 = 16,687.71/x
  3. Step 3: Cross multiply
    38,868.02x = 58,320.47 × 16,687.71
  4. Step 4: Simplify right side
    38,868.02x = 973,235,006.99
  5. Step 5: Solve for x
    x = 973,235,006.99/38,868.02
  6. Step 6: Final answer
    x = 25,039.48

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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.