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Finding the Fourth Proportional to 8,782.23, 12,119.78 and 5,005.96

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Solution

The fourth proportional to 8,782.23, 12,119.78 and 5,005.96 is: 6,908.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,782.23 : 12,119.78 = 5,005.96 : x
  2. Step 2: Convert to fraction form
    8,782.23/12,119.78 = 5,005.96/x
  3. Step 3: Cross multiply
    8,782.23x = 12,119.78 × 5,005.96
  4. Step 4: Simplify right side
    8,782.23x = 60,671,085.80
  5. Step 5: Solve for x
    x = 60,671,085.80/8,782.23
  6. Step 6: Final answer
    x = 6,908.40

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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.