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Finding the Fourth Proportional to 70,074.09, 105,048.62 and 25,690.48

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Solution

The fourth proportional to 70,074.09, 105,048.62 and 25,690.48 is: 38,512.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,074.09 : 105,048.62 = 25,690.48 : x
  2. Step 2: Convert to fraction form
    70,074.09/105,048.62 = 25,690.48/x
  3. Step 3: Cross multiply
    70,074.09x = 105,048.62 × 25,690.48
  4. Step 4: Simplify right side
    70,074.09x = 2,698,749,471.14
  5. Step 5: Solve for x
    x = 2,698,749,471.14/70,074.09
  6. Step 6: Final answer
    x = 38,512.80

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.