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Finding the Fourth Proportional to 18,922.69, 26,113.31 and 10,969.52

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Solution

The fourth proportional to 18,922.69, 26,113.31 and 10,969.52 is: 15,137.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,922.69 : 26,113.31 = 10,969.52 : x
  2. Step 2: Convert to fraction form
    18,922.69/26,113.31 = 10,969.52/x
  3. Step 3: Cross multiply
    18,922.69x = 26,113.31 × 10,969.52
  4. Step 4: Simplify right side
    18,922.69x = 286,450,503.74
  5. Step 5: Solve for x
    x = 286,450,503.74/18,922.69
  6. Step 6: Final answer
    x = 15,137.94

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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.