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Finding the Fourth Proportional to 8,661.40, 11,952.57 and 4,884.51

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Solution

The fourth proportional to 8,661.40, 11,952.57 and 4,884.51 is: 6,740.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.40 : 11,952.57 = 4,884.51 : x
  2. Step 2: Convert to fraction form
    8,661.40/11,952.57 = 4,884.51/x
  3. Step 3: Cross multiply
    8,661.40x = 11,952.57 × 4,884.51
  4. Step 4: Simplify right side
    8,661.40x = 58,382,447.69
  5. Step 5: Solve for x
    x = 58,382,447.69/8,661.40
  6. Step 6: Final answer
    x = 6,740.53

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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.