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Finding the Fourth Proportional to 18,605.83, 25,675.95 and 10,107.89

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Solution

The fourth proportional to 18,605.83, 25,675.95 and 10,107.89 is: 13,948.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,605.83 : 25,675.95 = 10,107.89 : x
  2. Step 2: Convert to fraction form
    18,605.83/25,675.95 = 10,107.89/x
  3. Step 3: Cross multiply
    18,605.83x = 25,675.95 × 10,107.89
  4. Step 4: Simplify right side
    18,605.83x = 259,529,502.49
  5. Step 5: Solve for x
    x = 259,529,502.49/18,605.83
  6. Step 6: Final answer
    x = 13,948.83

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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.