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Finding the Fourth Proportional to 19,379.56, 26,741.64 and 10,879.96

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Solution

The fourth proportional to 19,379.56, 26,741.64 and 10,879.96 is: 15,013.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,379.56 : 26,741.64 = 10,879.96 : x
  2. Step 2: Convert to fraction form
    19,379.56/26,741.64 = 10,879.96/x
  3. Step 3: Cross multiply
    19,379.56x = 26,741.64 × 10,879.96
  4. Step 4: Simplify right side
    19,379.56x = 290,947,973.53
  5. Step 5: Solve for x
    x = 290,947,973.53/19,379.56
  6. Step 6: Final answer
    x = 15,013.14

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.