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Finding the Fourth Proportional to 19,228.66, 28,838.67 and 6,916.66

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Solution

The fourth proportional to 19,228.66, 28,838.67 and 6,916.66 is: 10,373.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,228.66 : 28,838.67 = 6,916.66 : x
  2. Step 2: Convert to fraction form
    19,228.66/28,838.67 = 6,916.66/x
  3. Step 3: Cross multiply
    19,228.66x = 28,838.67 × 6,916.66
  4. Step 4: Simplify right side
    19,228.66x = 199,467,275.24
  5. Step 5: Solve for x
    x = 199,467,275.24/19,228.66
  6. Step 6: Final answer
    x = 10,373.44

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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.