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Finding the Fourth Proportional to 77,969.67, 116,954.23 and 18,805.33

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Solution

The fourth proportional to 77,969.67, 116,954.23 and 18,805.33 is: 28,207.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,969.67 : 116,954.23 = 18,805.33 : x
  2. Step 2: Convert to fraction form
    77,969.67/116,954.23 = 18,805.33/x
  3. Step 3: Cross multiply
    77,969.67x = 116,954.23 × 18,805.33
  4. Step 4: Simplify right side
    77,969.67x = 2,199,362,890.05
  5. Step 5: Solve for x
    x = 2,199,362,890.05/77,969.67
  6. Step 6: Final answer
    x = 28,207.93

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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.