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Finding the Fourth Proportional to 18,911.94, 26,094.52 and 10,953.69

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Solution

The fourth proportional to 18,911.94, 26,094.52 and 10,953.69 is: 15,113.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,911.94 : 26,094.52 = 10,953.69 : x
  2. Step 2: Convert to fraction form
    18,911.94/26,094.52 = 10,953.69/x
  3. Step 3: Cross multiply
    18,911.94x = 26,094.52 × 10,953.69
  4. Step 4: Simplify right side
    18,911.94x = 285,831,282.78
  5. Step 5: Solve for x
    x = 285,831,282.78/18,911.94
  6. Step 6: Final answer
    x = 15,113.80

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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.