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Finding the Fourth Proportional to 16,616.90, 24,916.80 and 4,928.60

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Solution

The fourth proportional to 16,616.90, 24,916.80 and 4,928.60 is: 7,390.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,616.90 : 24,916.80 = 4,928.60 : x
  2. Step 2: Convert to fraction form
    16,616.90/24,916.80 = 4,928.60/x
  3. Step 3: Cross multiply
    16,616.90x = 24,916.80 × 4,928.60
  4. Step 4: Simplify right side
    16,616.90x = 122,804,940.48
  5. Step 5: Solve for x
    x = 122,804,940.48/16,616.90
  6. Step 6: Final answer
    x = 7,390.36

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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.