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Finding the Fourth Proportional to 18,605.08, 27,907.49 and 7,511.60

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Solution

The fourth proportional to 18,605.08, 27,907.49 and 7,511.60 is: 11,267.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.08 : 27,907.49 = 7,511.60 : x
  2. Step 2: Convert to fraction form
    18,605.08/27,907.49 = 7,511.60/x
  3. Step 3: Cross multiply
    18,605.08x = 27,907.49 × 7,511.60
  4. Step 4: Simplify right side
    18,605.08x = 209,629,948.18
  5. Step 5: Solve for x
    x = 209,629,948.18/18,605.08
  6. Step 6: Final answer
    x = 11,267.35

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1.5x scale

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.