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Finding the Fourth Proportional to 14,586.45, 21,824.45 and 8,666.51

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Solution

The fourth proportional to 14,586.45, 21,824.45 and 8,666.51 is: 12,966.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,586.45 : 21,824.45 = 8,666.51 : x
  2. Step 2: Convert to fraction form
    14,586.45/21,824.45 = 8,666.51/x
  3. Step 3: Cross multiply
    14,586.45x = 21,824.45 × 8,666.51
  4. Step 4: Simplify right side
    14,586.45x = 189,141,694.21
  5. Step 5: Solve for x
    x = 189,141,694.21/14,586.45
  6. Step 6: Final answer
    x = 12,966.95

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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.