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Finding the Fourth Proportional to 8,605.99, 12,888.21 and 4,896.97

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Solution

The fourth proportional to 8,605.99, 12,888.21 and 4,896.97 is: 7,333.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,605.99 : 12,888.21 = 4,896.97 : x
  2. Step 2: Convert to fraction form
    8,605.99/12,888.21 = 4,896.97/x
  3. Step 3: Cross multiply
    8,605.99x = 12,888.21 × 4,896.97
  4. Step 4: Simplify right side
    8,605.99x = 63,113,177.72
  5. Step 5: Solve for x
    x = 63,113,177.72/8,605.99
  6. Step 6: Final answer
    x = 7,333.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.