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Finding the Fourth Proportional to 10,699.19, 14,765.32 and 5,919.05

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Solution

The fourth proportional to 10,699.19, 14,765.32 and 5,919.05 is: 8,168.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,699.19 : 14,765.32 = 5,919.05 : x
  2. Step 2: Convert to fraction form
    10,699.19/14,765.32 = 5,919.05/x
  3. Step 3: Cross multiply
    10,699.19x = 14,765.32 × 5,919.05
  4. Step 4: Simplify right side
    10,699.19x = 87,396,732.42
  5. Step 5: Solve for x
    x = 87,396,732.42/10,699.19
  6. Step 6: Final answer
    x = 8,168.54

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1.5x scale

Why These Related Problems?

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