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Finding the Fourth Proportional to 18,360.70, 25,337.74 and 10,908.70

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Solution

The fourth proportional to 18,360.70, 25,337.74 and 10,908.70 is: 15,053.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,360.70 : 25,337.74 = 10,908.70 : x
  2. Step 2: Convert to fraction form
    18,360.70/25,337.74 = 10,908.70/x
  3. Step 3: Cross multiply
    18,360.70x = 25,337.74 × 10,908.70
  4. Step 4: Simplify right side
    18,360.70x = 276,401,804.34
  5. Step 5: Solve for x
    x = 276,401,804.34/18,360.70
  6. Step 6: Final answer
    x = 15,053.99

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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.