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Finding the Fourth Proportional to 19,074.26, 28,608.96 and 7,379.48

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Solution

The fourth proportional to 19,074.26, 28,608.96 and 7,379.48 is: 11,068.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,074.26 : 28,608.96 = 7,379.48 : x
  2. Step 2: Convert to fraction form
    19,074.26/28,608.96 = 7,379.48/x
  3. Step 3: Cross multiply
    19,074.26x = 28,608.96 × 7,379.48
  4. Step 4: Simplify right side
    19,074.26x = 211,119,248.14
  5. Step 5: Solve for x
    x = 211,119,248.14/19,074.26
  6. Step 6: Final answer
    x = 11,068.28

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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.