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Finding the Fourth Proportional to 10,812.12, 14,920.74 and 5,844.12

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Solution

The fourth proportional to 10,812.12, 14,920.74 and 5,844.12 is: 8,064.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.12 : 14,920.74 = 5,844.12 : x
  2. Step 2: Convert to fraction form
    10,812.12/14,920.74 = 5,844.12/x
  3. Step 3: Cross multiply
    10,812.12x = 14,920.74 × 5,844.12
  4. Step 4: Simplify right side
    10,812.12x = 87,198,595.05
  5. Step 5: Solve for x
    x = 87,198,595.05/10,812.12
  6. Step 6: Final answer
    x = 8,064.89

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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.