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Finding the Fourth Proportional to 70,263.19, 105,396.15 and 25,867.09

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Solution

The fourth proportional to 70,263.19, 105,396.15 and 25,867.09 is: 38,801.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,263.19 : 105,396.15 = 25,867.09 : x
  2. Step 2: Convert to fraction form
    70,263.19/105,396.15 = 25,867.09/x
  3. Step 3: Cross multiply
    70,263.19x = 105,396.15 × 25,867.09
  4. Step 4: Simplify right side
    70,263.19x = 2,726,291,170.72
  5. Step 5: Solve for x
    x = 2,726,291,170.72/70,263.19
  6. Step 6: Final answer
    x = 38,801.13

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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.