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Finding the Fourth Proportional to 18,219.14, 25,154.02 and 14,869.94

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Solution

The fourth proportional to 18,219.14, 25,154.02 and 14,869.94 is: 20,529.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,219.14 : 25,154.02 = 14,869.94 : x
  2. Step 2: Convert to fraction form
    18,219.14/25,154.02 = 14,869.94/x
  3. Step 3: Cross multiply
    18,219.14x = 25,154.02 × 14,869.94
  4. Step 4: Simplify right side
    18,219.14x = 374,038,605.21
  5. Step 5: Solve for x
    x = 374,038,605.21/18,219.14
  6. Step 6: Final answer
    x = 20,529.99

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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.