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Finding the Fourth Proportional to 25,205.80, 37,808.70 and 12,083.80

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Solution

The fourth proportional to 25,205.80, 37,808.70 and 12,083.80 is: 18,125.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,205.80 : 37,808.70 = 12,083.80 : x
  2. Step 2: Convert to fraction form
    25,205.80/37,808.70 = 12,083.80/x
  3. Step 3: Cross multiply
    25,205.80x = 37,808.70 × 12,083.80
  4. Step 4: Simplify right side
    25,205.80x = 456,872,769.06
  5. Step 5: Solve for x
    x = 456,872,769.06/25,205.80
  6. Step 6: Final answer
    x = 18,125.70

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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.