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Finding the Fourth Proportional to 19,160.94, 28,696.81 and 18,495.87

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Solution

The fourth proportional to 19,160.94, 28,696.81 and 18,495.87 is: 27,700.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,160.94 : 28,696.81 = 18,495.87 : x
  2. Step 2: Convert to fraction form
    19,160.94/28,696.81 = 18,495.87/x
  3. Step 3: Cross multiply
    19,160.94x = 28,696.81 × 18,495.87
  4. Step 4: Simplify right side
    19,160.94x = 530,772,523.00
  5. Step 5: Solve for x
    x = 530,772,523.00/19,160.94
  6. Step 6: Final answer
    x = 27,700.76

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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.