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Finding the Fourth Proportional to 28,919, 39,915.52 and 16,351.04

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Solution

The fourth proportional to 28,919, 39,915.52 and 16,351.04 is: 22,568.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,919 : 39,915.52 = 16,351.04 : x
  2. Step 2: Convert to fraction form
    28,919/39,915.52 = 16,351.04/x
  3. Step 3: Cross multiply
    28,919x = 39,915.52 × 16,351.04
  4. Step 4: Simplify right side
    28,919x = 652,660,264.14
  5. Step 5: Solve for x
    x = 652,660,264.14/28,919
  6. Step 6: Final answer
    x = 22,568.56

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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.