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Finding the Fourth Proportional to 85,116.92, 117,465.54 and 47,390.36

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Solution

The fourth proportional to 85,116.92, 117,465.54 and 47,390.36 is: 65,401.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,116.92 : 117,465.54 = 47,390.36 : x
  2. Step 2: Convert to fraction form
    85,116.92/117,465.54 = 47,390.36/x
  3. Step 3: Cross multiply
    85,116.92x = 117,465.54 × 47,390.36
  4. Step 4: Simplify right side
    85,116.92x = 5,566,734,228.19
  5. Step 5: Solve for x
    x = 5,566,734,228.19/85,116.92
  6. Step 6: Final answer
    x = 65,401.03

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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.