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Finding the Fourth Proportional to 18,867, 28,263.51 and 10,952.91

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Solution

The fourth proportional to 18,867, 28,263.51 and 10,952.91 is: 16,407.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,867 : 28,263.51 = 10,952.91 : x
  2. Step 2: Convert to fraction form
    18,867/28,263.51 = 10,952.91/x
  3. Step 3: Cross multiply
    18,867x = 28,263.51 × 10,952.91
  4. Step 4: Simplify right side
    18,867x = 309,567,681.31
  5. Step 5: Solve for x
    x = 309,567,681.31/18,867
  6. Step 6: Final answer
    x = 16,407.89

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.