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Finding the Fourth Proportional to 8,458.76, 11,660.72 and 5,933.28

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Solution

The fourth proportional to 8,458.76, 11,660.72 and 5,933.28 is: 8,179.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,458.76 : 11,660.72 = 5,933.28 : x
  2. Step 2: Convert to fraction form
    8,458.76/11,660.72 = 5,933.28/x
  3. Step 3: Cross multiply
    8,458.76x = 11,660.72 × 5,933.28
  4. Step 4: Simplify right side
    8,458.76x = 69,186,316.76
  5. Step 5: Solve for x
    x = 69,186,316.76/8,458.76
  6. Step 6: Final answer
    x = 8,179.25

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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.