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Finding the Fourth Proportional to 18,474.02, 25,485.01 and 10,916.70

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Solution

The fourth proportional to 18,474.02, 25,485.01 and 10,916.70 is: 15,059.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,474.02 : 25,485.01 = 10,916.70 : x
  2. Step 2: Convert to fraction form
    18,474.02/25,485.01 = 10,916.70/x
  3. Step 3: Cross multiply
    18,474.02x = 25,485.01 × 10,916.70
  4. Step 4: Simplify right side
    18,474.02x = 278,212,081.24
  5. Step 5: Solve for x
    x = 278,212,081.24/18,474.02
  6. Step 6: Final answer
    x = 15,059.64

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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.