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Finding the Fourth Proportional to 19,212.60, 28,816.98 and 5,363.64

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Solution

The fourth proportional to 19,212.60, 28,816.98 and 5,363.64 is: 8,044.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,212.60 : 28,816.98 = 5,363.64 : x
  2. Step 2: Convert to fraction form
    19,212.60/28,816.98 = 5,363.64/x
  3. Step 3: Cross multiply
    19,212.60x = 28,816.98 × 5,363.64
  4. Step 4: Simplify right side
    19,212.60x = 154,563,906.61
  5. Step 5: Solve for x
    x = 154,563,906.61/19,212.60
  6. Step 6: Final answer
    x = 8,044.92

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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.