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Finding the Fourth Proportional to 70,261.44, 105,433.65 and 25,919.16

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Solution

The fourth proportional to 70,261.44, 105,433.65 and 25,919.16 is: 38,894.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,261.44 : 105,433.65 = 25,919.16 : x
  2. Step 2: Convert to fraction form
    70,261.44/105,433.65 = 25,919.16/x
  3. Step 3: Cross multiply
    70,261.44x = 105,433.65 × 25,919.16
  4. Step 4: Simplify right side
    70,261.44x = 2,732,751,643.73
  5. Step 5: Solve for x
    x = 2,732,751,643.73/70,261.44
  6. Step 6: Final answer
    x = 38,894.05

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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.