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Finding the Fourth Proportional to 22,338.90, 30,806.01 and 15,086.94

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Solution

The fourth proportional to 22,338.90, 30,806.01 and 15,086.94 is: 20,805.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    22,338.90 : 30,806.01 = 15,086.94 : x
  2. Step 2: Convert to fraction form
    22,338.90/30,806.01 = 15,086.94/x
  3. Step 3: Cross multiply
    22,338.90x = 30,806.01 × 15,086.94
  4. Step 4: Simplify right side
    22,338.90x = 464,768,424.51
  5. Step 5: Solve for x
    x = 464,768,424.51/22,338.90
  6. Step 6: Final answer
    x = 20,805.34

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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.