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Finding the Fourth Proportional to 19,206.14, 28,809.14 and 7,511.12

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Solution

The fourth proportional to 19,206.14, 28,809.14 and 7,511.12 is: 11,266.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,206.14 : 28,809.14 = 7,511.12 : x
  2. Step 2: Convert to fraction form
    19,206.14/28,809.14 = 7,511.12/x
  3. Step 3: Cross multiply
    19,206.14x = 28,809.14 × 7,511.12
  4. Step 4: Simplify right side
    19,206.14x = 216,388,907.64
  5. Step 5: Solve for x
    x = 216,388,907.64/19,206.14
  6. Step 6: Final answer
    x = 11,266.65

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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.