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Finding the Fourth Proportional to 76,081.44, 104,980.14 and 47,825.40

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Solution

The fourth proportional to 76,081.44, 104,980.14 and 47,825.40 is: 65,991.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,081.44 : 104,980.14 = 47,825.40 : x
  2. Step 2: Convert to fraction form
    76,081.44/104,980.14 = 47,825.40/x
  3. Step 3: Cross multiply
    76,081.44x = 104,980.14 × 47,825.40
  4. Step 4: Simplify right side
    76,081.44x = 5,020,717,187.56
  5. Step 5: Solve for x
    x = 5,020,717,187.56/76,081.44
  6. Step 6: Final answer
    x = 65,991.35

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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.