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Finding the Fourth Proportional to 10,812.21, 14,920.80 and 5,844.21

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Solution

The fourth proportional to 10,812.21, 14,920.80 and 5,844.21 is: 8,064.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,812.21 : 14,920.80 = 5,844.21 : x
  2. Step 2: Convert to fraction form
    10,812.21/14,920.80 = 5,844.21/x
  3. Step 3: Cross multiply
    10,812.21x = 14,920.80 × 5,844.21
  4. Step 4: Simplify right side
    10,812.21x = 87,200,184.74
  5. Step 5: Solve for x
    x = 87,200,184.74/10,812.21
  6. Step 6: Final answer
    x = 8,064.98

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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.