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Finding the Fourth Proportional to 19,161, 26,444.61 and 10,779.12

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Solution

The fourth proportional to 19,161, 26,444.61 and 10,779.12 is: 14,876.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,161 : 26,444.61 = 10,779.12 : x
  2. Step 2: Convert to fraction form
    19,161/26,444.61 = 10,779.12/x
  3. Step 3: Cross multiply
    19,161x = 26,444.61 × 10,779.12
  4. Step 4: Simplify right side
    19,161x = 285,049,624.54
  5. Step 5: Solve for x
    x = 285,049,624.54/19,161
  6. Step 6: Final answer
    x = 14,876.55

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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.