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Finding the Fourth Proportional to 18,461.71, 25,491.68 and 14,865.25

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Solution

The fourth proportional to 18,461.71, 25,491.68 and 14,865.25 is: 20,525.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,461.71 : 25,491.68 = 14,865.25 : x
  2. Step 2: Convert to fraction form
    18,461.71/25,491.68 = 14,865.25/x
  3. Step 3: Cross multiply
    18,461.71x = 25,491.68 × 14,865.25
  4. Step 4: Simplify right side
    18,461.71x = 378,940,196.12
  5. Step 5: Solve for x
    x = 378,940,196.12/18,461.71
  6. Step 6: Final answer
    x = 20,525.74

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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.