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Finding the Fourth Proportional to 8,661.97, 11,953.61 and 4,683.16

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Solution

The fourth proportional to 8,661.97, 11,953.61 and 4,683.16 is: 6,462.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.97 : 11,953.61 = 4,683.16 : x
  2. Step 2: Convert to fraction form
    8,661.97/11,953.61 = 4,683.16/x
  3. Step 3: Cross multiply
    8,661.97x = 11,953.61 × 4,683.16
  4. Step 4: Simplify right side
    8,661.97x = 55,980,668.21
  5. Step 5: Solve for x
    x = 55,980,668.21/8,661.97
  6. Step 6: Final answer
    x = 6,462.81

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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.