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Finding the Fourth Proportional to 19,183.90, 28,774.02 and 8,654.62

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Solution

The fourth proportional to 19,183.90, 28,774.02 and 8,654.62 is: 12,981.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,183.90 : 28,774.02 = 8,654.62 : x
  2. Step 2: Convert to fraction form
    19,183.90/28,774.02 = 8,654.62/x
  3. Step 3: Cross multiply
    19,183.90x = 28,774.02 × 8,654.62
  4. Step 4: Simplify right side
    19,183.90x = 249,028,208.97
  5. Step 5: Solve for x
    x = 249,028,208.97/19,183.90
  6. Step 6: Final answer
    x = 12,981.10

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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.