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Finding the Fourth Proportional to 18,083.76, 24,964.92 and 12,485.04

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Solution

The fourth proportional to 18,083.76, 24,964.92 and 12,485.04 is: 17,235.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,083.76 : 24,964.92 = 12,485.04 : x
  2. Step 2: Convert to fraction form
    18,083.76/24,964.92 = 12,485.04/x
  3. Step 3: Cross multiply
    18,083.76x = 24,964.92 × 12,485.04
  4. Step 4: Simplify right side
    18,083.76x = 311,688,024.80
  5. Step 5: Solve for x
    x = 311,688,024.80/18,083.76
  6. Step 6: Final answer
    x = 17,235.80

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.