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Finding the Fourth Proportional to 25,877.15, 38,815.73 and 8,346.98

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Solution

The fourth proportional to 25,877.15, 38,815.73 and 8,346.98 is: 12,520.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,877.15 : 38,815.73 = 8,346.98 : x
  2. Step 2: Convert to fraction form
    25,877.15/38,815.73 = 8,346.98/x
  3. Step 3: Cross multiply
    25,877.15x = 38,815.73 × 8,346.98
  4. Step 4: Simplify right side
    25,877.15x = 323,993,886.18
  5. Step 5: Solve for x
    x = 323,993,886.18/25,877.15
  6. Step 6: Final answer
    x = 12,520.46

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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.