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Finding the Fourth Proportional to 34,153, 47,139.78 and 19,257.64

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Solution

The fourth proportional to 34,153, 47,139.78 and 19,257.64 is: 26,580.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    34,153 : 47,139.78 = 19,257.64 : x
  2. Step 2: Convert to fraction form
    34,153/47,139.78 = 19,257.64/x
  3. Step 3: Cross multiply
    34,153x = 47,139.78 × 19,257.64
  4. Step 4: Simplify right side
    34,153x = 907,800,912.92
  5. Step 5: Solve for x
    x = 907,800,912.92/34,153
  6. Step 6: Final answer
    x = 26,580.41

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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.