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Finding the Fourth Proportional to 7,863.76, 10,851.60 and 4,327.10

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Solution

The fourth proportional to 7,863.76, 10,851.60 and 4,327.10 is: 5,971.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,863.76 : 10,851.60 = 4,327.10 : x
  2. Step 2: Convert to fraction form
    7,863.76/10,851.60 = 4,327.10/x
  3. Step 3: Cross multiply
    7,863.76x = 10,851.60 × 4,327.10
  4. Step 4: Simplify right side
    7,863.76x = 46,955,958.36
  5. Step 5: Solve for x
    x = 46,955,958.36/7,863.76
  6. Step 6: Final answer
    x = 5,971.18

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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.