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Finding the Fourth Proportional to 8,821.10, 12,173.16 and 4,842.26

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Solution

The fourth proportional to 8,821.10, 12,173.16 and 4,842.26 is: 6,682.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,821.10 : 12,173.16 = 4,842.26 : x
  2. Step 2: Convert to fraction form
    8,821.10/12,173.16 = 4,842.26/x
  3. Step 3: Cross multiply
    8,821.10x = 12,173.16 × 4,842.26
  4. Step 4: Simplify right side
    8,821.10x = 58,945,605.74
  5. Step 5: Solve for x
    x = 58,945,605.74/8,821.10
  6. Step 6: Final answer
    x = 6,682.34

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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.