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Finding the Fourth Proportional to 25,909.60, 38,864.40 and 16,578.40

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Solution

The fourth proportional to 25,909.60, 38,864.40 and 16,578.40 is: 24,867.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,909.60 : 38,864.40 = 16,578.40 : x
  2. Step 2: Convert to fraction form
    25,909.60/38,864.40 = 16,578.40/x
  3. Step 3: Cross multiply
    25,909.60x = 38,864.40 × 16,578.40
  4. Step 4: Simplify right side
    25,909.60x = 644,309,568.96
  5. Step 5: Solve for x
    x = 644,309,568.96/25,909.60
  6. Step 6: Final answer
    x = 24,867.60

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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.