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Finding the Fourth Proportional to 60,581.75, 83,672.80 and 40,403.56

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Solution

The fourth proportional to 60,581.75, 83,672.80 and 40,403.56 is: 55,803.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,581.75 : 83,672.80 = 40,403.56 : x
  2. Step 2: Convert to fraction form
    60,581.75/83,672.80 = 40,403.56/x
  3. Step 3: Cross multiply
    60,581.75x = 83,672.80 × 40,403.56
  4. Step 4: Simplify right side
    60,581.75x = 3,380,678,684.98
  5. Step 5: Solve for x
    x = 3,380,678,684.98/60,581.75
  6. Step 6: Final answer
    x = 55,803.59

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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.