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Finding the Fourth Proportional to 60,916.80, 91,371.96 and 19,360.56

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Solution

The fourth proportional to 60,916.80, 91,371.96 and 19,360.56 is: 29,039.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,916.80 : 91,371.96 = 19,360.56 : x
  2. Step 2: Convert to fraction form
    60,916.80/91,371.96 = 19,360.56/x
  3. Step 3: Cross multiply
    60,916.80x = 91,371.96 × 19,360.56
  4. Step 4: Simplify right side
    60,916.80x = 1,769,012,313.90
  5. Step 5: Solve for x
    x = 1,769,012,313.90/60,916.80
  6. Step 6: Final answer
    x = 29,039.81

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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.