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Finding the Fourth Proportional to 10,698.90, 14,764.05 and 6,222.78

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Solution

The fourth proportional to 10,698.90, 14,764.05 and 6,222.78 is: 8,587.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,698.90 : 14,764.05 = 6,222.78 : x
  2. Step 2: Convert to fraction form
    10,698.90/14,764.05 = 6,222.78/x
  3. Step 3: Cross multiply
    10,698.90x = 14,764.05 × 6,222.78
  4. Step 4: Simplify right side
    10,698.90x = 91,873,435.06
  5. Step 5: Solve for x
    x = 91,873,435.06/10,698.90
  6. Step 6: Final answer
    x = 8,587.19

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.