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Finding the Fourth Proportional to 18,822.66, 28,225.76 and 6,339.34

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Solution

The fourth proportional to 18,822.66, 28,225.76 and 6,339.34 is: 9,506.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,822.66 : 28,225.76 = 6,339.34 : x
  2. Step 2: Convert to fraction form
    18,822.66/28,225.76 = 6,339.34/x
  3. Step 3: Cross multiply
    18,822.66x = 28,225.76 × 6,339.34
  4. Step 4: Simplify right side
    18,822.66x = 178,932,689.40
  5. Step 5: Solve for x
    x = 178,932,689.40/18,822.66
  6. Step 6: Final answer
    x = 9,506.24

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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.