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Finding the Fourth Proportional to 85,359.85, 117,795.91 and 47,119.34

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Solution

The fourth proportional to 85,359.85, 117,795.91 and 47,119.34 is: 65,024.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,359.85 : 117,795.91 = 47,119.34 : x
  2. Step 2: Convert to fraction form
    85,359.85/117,795.91 = 47,119.34/x
  3. Step 3: Cross multiply
    85,359.85x = 117,795.91 × 47,119.34
  4. Step 4: Simplify right side
    85,359.85x = 5,550,465,964.59
  5. Step 5: Solve for x
    x = 5,550,465,964.59/85,359.85
  6. Step 6: Final answer
    x = 65,024.32

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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.