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Finding the Fourth Proportional to 62,647.54, 86,355.42 and 47,479.48

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Solution

The fourth proportional to 62,647.54, 86,355.42 and 47,479.48 is: 65,447.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,647.54 : 86,355.42 = 47,479.48 : x
  2. Step 2: Convert to fraction form
    62,647.54/86,355.42 = 47,479.48/x
  3. Step 3: Cross multiply
    62,647.54x = 86,355.42 × 47,479.48
  4. Step 4: Simplify right side
    62,647.54x = 4,100,110,436.78
  5. Step 5: Solve for x
    x = 4,100,110,436.78/62,647.54
  6. Step 6: Final answer
    x = 65,447.27

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1.5x scale

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.