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Finding the Fourth Proportional to 85,203.99, 117,583.88 and 48,908.57

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Solution

The fourth proportional to 85,203.99, 117,583.88 and 48,908.57 is: 67,495.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,203.99 : 117,583.88 = 48,908.57 : x
  2. Step 2: Convert to fraction form
    85,203.99/117,583.88 = 48,908.57/x
  3. Step 3: Cross multiply
    85,203.99x = 117,583.88 × 48,908.57
  4. Step 4: Simplify right side
    85,203.99x = 5,750,858,593.39
  5. Step 5: Solve for x
    x = 5,750,858,593.39/85,203.99
  6. Step 6: Final answer
    x = 67,495.18

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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.