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Finding the Fourth Proportional to 85,069.80, 117,395.16 and 47,344.04

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Solution

The fourth proportional to 85,069.80, 117,395.16 and 47,344.04 is: 65,334.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,069.80 : 117,395.16 = 47,344.04 : x
  2. Step 2: Convert to fraction form
    85,069.80/117,395.16 = 47,344.04/x
  3. Step 3: Cross multiply
    85,069.80x = 117,395.16 × 47,344.04
  4. Step 4: Simplify right side
    85,069.80x = 5,557,961,150.85
  5. Step 5: Solve for x
    x = 5,557,961,150.85/85,069.80
  6. Step 6: Final answer
    x = 65,334.13

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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.