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Finding the Fourth Proportional to 19,196.96, 28,799.20 and 7,509.44

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Solution

The fourth proportional to 19,196.96, 28,799.20 and 7,509.44 is: 11,265.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,196.96 : 28,799.20 = 7,509.44 : x
  2. Step 2: Convert to fraction form
    19,196.96/28,799.20 = 7,509.44/x
  3. Step 3: Cross multiply
    19,196.96x = 28,799.20 × 7,509.44
  4. Step 4: Simplify right side
    19,196.96x = 216,265,864.45
  5. Step 5: Solve for x
    x = 216,265,864.45/19,196.96
  6. Step 6: Final answer
    x = 11,265.63

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.