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Finding the Fourth Proportional to 18,648.63, 25,735.05 and 10,265.13

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Solution

The fourth proportional to 18,648.63, 25,735.05 and 10,265.13 is: 14,165.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,648.63 : 25,735.05 = 10,265.13 : x
  2. Step 2: Convert to fraction form
    18,648.63/25,735.05 = 10,265.13/x
  3. Step 3: Cross multiply
    18,648.63x = 25,735.05 × 10,265.13
  4. Step 4: Simplify right side
    18,648.63x = 264,173,633.81
  5. Step 5: Solve for x
    x = 264,173,633.81/18,648.63
  6. Step 6: Final answer
    x = 14,165.85

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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.