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Finding the Fourth Proportional to 8,457.07, 11,674.86 and 5,629.16

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Solution

The fourth proportional to 8,457.07, 11,674.86 and 5,629.16 is: 7,770.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,457.07 : 11,674.86 = 5,629.16 : x
  2. Step 2: Convert to fraction form
    8,457.07/11,674.86 = 5,629.16/x
  3. Step 3: Cross multiply
    8,457.07x = 11,674.86 × 5,629.16
  4. Step 4: Simplify right side
    8,457.07x = 65,719,654.92
  5. Step 5: Solve for x
    x = 65,719,654.92/8,457.07
  6. Step 6: Final answer
    x = 7,770.97

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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.