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Finding the Fourth Proportional to 18,797.60, 25,925.72 and 12,083.91

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Solution

The fourth proportional to 18,797.60, 25,925.72 and 12,083.91 is: 16,666.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,797.60 : 25,925.72 = 12,083.91 : x
  2. Step 2: Convert to fraction form
    18,797.60/25,925.72 = 12,083.91/x
  3. Step 3: Cross multiply
    18,797.60x = 25,925.72 × 12,083.91
  4. Step 4: Simplify right side
    18,797.60x = 313,284,006.75
  5. Step 5: Solve for x
    x = 313,284,006.75/18,797.60
  6. Step 6: Final answer
    x = 16,666.17

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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.