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Finding the Fourth Proportional to 18,890.67, 26,069.06 and 10,507.17

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Solution

The fourth proportional to 18,890.67, 26,069.06 and 10,507.17 is: 14,499.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,890.67 : 26,069.06 = 10,507.17 : x
  2. Step 2: Convert to fraction form
    18,890.67/26,069.06 = 10,507.17/x
  3. Step 3: Cross multiply
    18,890.67x = 26,069.06 × 10,507.17
  4. Step 4: Simplify right side
    18,890.67x = 273,911,992.62
  5. Step 5: Solve for x
    x = 273,911,992.62/18,890.67
  6. Step 6: Final answer
    x = 14,499.86

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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.