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Finding the Fourth Proportional to 8,628.56, 11,895.36 and 7,296.92

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Solution

The fourth proportional to 8,628.56, 11,895.36 and 7,296.92 is: 10,059.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,628.56 : 11,895.36 = 7,296.92 : x
  2. Step 2: Convert to fraction form
    8,628.56/11,895.36 = 7,296.92/x
  3. Step 3: Cross multiply
    8,628.56x = 11,895.36 × 7,296.92
  4. Step 4: Simplify right side
    8,628.56x = 86,799,490.29
  5. Step 5: Solve for x
    x = 86,799,490.29/8,628.56
  6. Step 6: Final answer
    x = 10,059.56

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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.