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Finding the Fourth Proportional to 7,842.22, 10,822.11 and 4,305.35

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Solution

The fourth proportional to 7,842.22, 10,822.11 and 4,305.35 is: 5,941.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,842.22 : 10,822.11 = 4,305.35 : x
  2. Step 2: Convert to fraction form
    7,842.22/10,822.11 = 4,305.35/x
  3. Step 3: Cross multiply
    7,842.22x = 10,822.11 × 4,305.35
  4. Step 4: Simplify right side
    7,842.22x = 46,592,982.20
  5. Step 5: Solve for x
    x = 46,592,982.20/7,842.22
  6. Step 6: Final answer
    x = 5,941.30

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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.