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Finding the Fourth Proportional to 11,312.60, 16,944.60 and 9,368.60

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Solution

The fourth proportional to 11,312.60, 16,944.60 and 9,368.60 is: 14,032.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,312.60 : 16,944.60 = 9,368.60 : x
  2. Step 2: Convert to fraction form
    11,312.60/16,944.60 = 9,368.60/x
  3. Step 3: Cross multiply
    11,312.60x = 16,944.60 × 9,368.60
  4. Step 4: Simplify right side
    11,312.60x = 158,747,179.56
  5. Step 5: Solve for x
    x = 158,747,179.56/11,312.60
  6. Step 6: Final answer
    x = 14,032.78

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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.