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Finding the Fourth Proportional to 19,527.84, 26,948.80 and 11,028.40

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Solution

The fourth proportional to 19,527.84, 26,948.80 and 11,028.40 is: 15,219.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,527.84 : 26,948.80 = 11,028.40 : x
  2. Step 2: Convert to fraction form
    19,527.84/26,948.80 = 11,028.40/x
  3. Step 3: Cross multiply
    19,527.84x = 26,948.80 × 11,028.40
  4. Step 4: Simplify right side
    19,527.84x = 297,202,145.92
  5. Step 5: Solve for x
    x = 297,202,145.92/19,527.84
  6. Step 6: Final answer
    x = 15,219.41

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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.