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Finding the Fourth Proportional to 8,788.86, 13,094.53 and 8,370.90

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Solution

The fourth proportional to 8,788.86, 13,094.53 and 8,370.90 is: 12,471.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,788.86 : 13,094.53 = 8,370.90 : x
  2. Step 2: Convert to fraction form
    8,788.86/13,094.53 = 8,370.90/x
  3. Step 3: Cross multiply
    8,788.86x = 13,094.53 × 8,370.90
  4. Step 4: Simplify right side
    8,788.86x = 109,612,980.25
  5. Step 5: Solve for x
    x = 109,612,980.25/8,788.86
  6. Step 6: Final answer
    x = 12,471.81

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.