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Finding the Fourth Proportional to 18,946.65, 28,424.13 and 5,800.03

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Solution

The fourth proportional to 18,946.65, 28,424.13 and 5,800.03 is: 8,701.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,946.65 : 28,424.13 = 5,800.03 : x
  2. Step 2: Convert to fraction form
    18,946.65/28,424.13 = 5,800.03/x
  3. Step 3: Cross multiply
    18,946.65x = 28,424.13 × 5,800.03
  4. Step 4: Simplify right side
    18,946.65x = 164,860,806.72
  5. Step 5: Solve for x
    x = 164,860,806.72/18,946.65
  6. Step 6: Final answer
    x = 8,701.32

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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.