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Finding the Fourth Proportional to 71,604.68, 98,792.21 and 41,378.99

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Solution

The fourth proportional to 71,604.68, 98,792.21 and 41,378.99 is: 57,090.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,604.68 : 98,792.21 = 41,378.99 : x
  2. Step 2: Convert to fraction form
    71,604.68/98,792.21 = 41,378.99/x
  3. Step 3: Cross multiply
    71,604.68x = 98,792.21 × 41,378.99
  4. Step 4: Simplify right side
    71,604.68x = 4,087,921,869.67
  5. Step 5: Solve for x
    x = 4,087,921,869.67/71,604.68
  6. Step 6: Final answer
    x = 57,090.15

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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.