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Finding the Fourth Proportional to 18,649.35, 25,647.90 and 14,827.57

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Solution

The fourth proportional to 18,649.35, 25,647.90 and 14,827.57 is: 20,391.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,649.35 : 25,647.90 = 14,827.57 : x
  2. Step 2: Convert to fraction form
    18,649.35/25,647.90 = 14,827.57/x
  3. Step 3: Cross multiply
    18,649.35x = 25,647.90 × 14,827.57
  4. Step 4: Simplify right side
    18,649.35x = 380,296,032.60
  5. Step 5: Solve for x
    x = 380,296,032.60/18,649.35
  6. Step 6: Final answer
    x = 20,391.92

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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.