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Finding the Fourth Proportional to 14,828.90, 20,469.06 and 9,167.99

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Solution

The fourth proportional to 14,828.90, 20,469.06 and 9,167.99 is: 12,655.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,828.90 : 20,469.06 = 9,167.99 : x
  2. Step 2: Convert to fraction form
    14,828.90/20,469.06 = 9,167.99/x
  3. Step 3: Cross multiply
    14,828.90x = 20,469.06 × 9,167.99
  4. Step 4: Simplify right side
    14,828.90x = 187,660,035.04
  5. Step 5: Solve for x
    x = 187,660,035.04/14,828.90
  6. Step 6: Final answer
    x = 12,655.02

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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.