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Finding the Fourth Proportional to 25,884.80, 38,827.20 and 16,553.60

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Solution

The fourth proportional to 25,884.80, 38,827.20 and 16,553.60 is: 24,830.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,884.80 : 38,827.20 = 16,553.60 : x
  2. Step 2: Convert to fraction form
    25,884.80/38,827.20 = 16,553.60/x
  3. Step 3: Cross multiply
    25,884.80x = 38,827.20 × 16,553.60
  4. Step 4: Simplify right side
    25,884.80x = 642,729,937.92
  5. Step 5: Solve for x
    x = 642,729,937.92/25,884.80
  6. Step 6: Final answer
    x = 24,830.40

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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.