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Finding the Fourth Proportional to 8,661.91, 11,953.40 and 4,682.99

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Solution

The fourth proportional to 8,661.91, 11,953.40 and 4,682.99 is: 6,462.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,661.91 : 11,953.40 = 4,682.99 : x
  2. Step 2: Convert to fraction form
    8,661.91/11,953.40 = 4,682.99/x
  3. Step 3: Cross multiply
    8,661.91x = 11,953.40 × 4,682.99
  4. Step 4: Simplify right side
    8,661.91x = 55,977,652.67
  5. Step 5: Solve for x
    x = 55,977,652.67/8,661.91
  6. Step 6: Final answer
    x = 6,462.51

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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.