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Finding the Fourth Proportional to 25,465.70, 38,173.95 and 8,813.21

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Solution

The fourth proportional to 25,465.70, 38,173.95 and 8,813.21 is: 13,211.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,465.70 : 38,173.95 = 8,813.21 : x
  2. Step 2: Convert to fraction form
    25,465.70/38,173.95 = 8,813.21/x
  3. Step 3: Cross multiply
    25,465.70x = 38,173.95 × 8,813.21
  4. Step 4: Simplify right side
    25,465.70x = 336,435,037.88
  5. Step 5: Solve for x
    x = 336,435,037.88/25,465.70
  6. Step 6: Final answer
    x = 13,211.30

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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.