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Finding the Fourth Proportional to 18,696.42, 25,801.02 and 10,312.92

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Solution

The fourth proportional to 18,696.42, 25,801.02 and 10,312.92 is: 14,231.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,696.42 : 25,801.02 = 10,312.92 : x
  2. Step 2: Convert to fraction form
    18,696.42/25,801.02 = 10,312.92/x
  3. Step 3: Cross multiply
    18,696.42x = 25,801.02 × 10,312.92
  4. Step 4: Simplify right side
    18,696.42x = 266,083,855.18
  5. Step 5: Solve for x
    x = 266,083,855.18/18,696.42
  6. Step 6: Final answer
    x = 14,231.81

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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.