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Finding the Fourth Proportional to 18,423.21, 25,424.01 and 10,465.44

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Solution

The fourth proportional to 18,423.21, 25,424.01 and 10,465.44 is: 14,442.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,423.21 : 25,424.01 = 10,465.44 : x
  2. Step 2: Convert to fraction form
    18,423.21/25,424.01 = 10,465.44/x
  3. Step 3: Cross multiply
    18,423.21x = 25,424.01 × 10,465.44
  4. Step 4: Simplify right side
    18,423.21x = 266,073,324.09
  5. Step 5: Solve for x
    x = 266,073,324.09/18,423.21
  6. Step 6: Final answer
    x = 14,442.29

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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.