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Finding the Fourth Proportional to 70,051.36, 105,107.82 and 36,763.60

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Solution

The fourth proportional to 70,051.36, 105,107.82 and 36,763.60 is: 55,161.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,051.36 : 105,107.82 = 36,763.60 : x
  2. Step 2: Convert to fraction form
    70,051.36/105,107.82 = 36,763.60/x
  3. Step 3: Cross multiply
    70,051.36x = 105,107.82 × 36,763.60
  4. Step 4: Simplify right side
    70,051.36x = 3,864,141,851.35
  5. Step 5: Solve for x
    x = 3,864,141,851.35/70,051.36
  6. Step 6: Final answer
    x = 55,161.55

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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.