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Finding the Fourth Proportional to 14,616.48, 20,172.06 and 8,330.88

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Solution

The fourth proportional to 14,616.48, 20,172.06 and 8,330.88 is: 11,497.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,616.48 : 20,172.06 = 8,330.88 : x
  2. Step 2: Convert to fraction form
    14,616.48/20,172.06 = 8,330.88/x
  3. Step 3: Cross multiply
    14,616.48x = 20,172.06 × 8,330.88
  4. Step 4: Simplify right side
    14,616.48x = 168,051,011.21
  5. Step 5: Solve for x
    x = 168,051,011.21/14,616.48
  6. Step 6: Final answer
    x = 11,497.37

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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.