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Finding the Fourth Proportional to 16,987.86, 25,491.24 and 6,464.88

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Solution

The fourth proportional to 16,987.86, 25,491.24 and 6,464.88 is: 9,700.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,987.86 : 25,491.24 = 6,464.88 : x
  2. Step 2: Convert to fraction form
    16,987.86/25,491.24 = 6,464.88/x
  3. Step 3: Cross multiply
    16,987.86x = 25,491.24 × 6,464.88
  4. Step 4: Simplify right side
    16,987.86x = 164,797,807.65
  5. Step 5: Solve for x
    x = 164,797,807.65/16,987.86
  6. Step 6: Final answer
    x = 9,700.92

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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.