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Finding the Fourth Proportional to 19,415.55, 26,794.02 and 10,917.71

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Solution

The fourth proportional to 19,415.55, 26,794.02 and 10,917.71 is: 15,066.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,415.55 : 26,794.02 = 10,917.71 : x
  2. Step 2: Convert to fraction form
    19,415.55/26,794.02 = 10,917.71/x
  3. Step 3: Cross multiply
    19,415.55x = 26,794.02 × 10,917.71
  4. Step 4: Simplify right side
    19,415.55x = 292,529,340.09
  5. Step 5: Solve for x
    x = 292,529,340.09/19,415.55
  6. Step 6: Final answer
    x = 15,066.76

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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.