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Finding the Fourth Proportional to 19,225.61, 28,797.88 and 12,201.92

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Solution

The fourth proportional to 19,225.61, 28,797.88 and 12,201.92 is: 18,277.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,225.61 : 28,797.88 = 12,201.92 : x
  2. Step 2: Convert to fraction form
    19,225.61/28,797.88 = 12,201.92/x
  3. Step 3: Cross multiply
    19,225.61x = 28,797.88 × 12,201.92
  4. Step 4: Simplify right side
    19,225.61x = 351,389,427.93
  5. Step 5: Solve for x
    x = 351,389,427.93/19,225.61
  6. Step 6: Final answer
    x = 18,277.15

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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.