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Finding the Fourth Proportional to 18,259.67, 27,378.84 and 8,887.84

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Solution

The fourth proportional to 18,259.67, 27,378.84 and 8,887.84 is: 13,326.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,259.67 : 27,378.84 = 8,887.84 : x
  2. Step 2: Convert to fraction form
    18,259.67/27,378.84 = 8,887.84/x
  3. Step 3: Cross multiply
    18,259.67x = 27,378.84 × 8,887.84
  4. Step 4: Simplify right side
    18,259.67x = 243,338,714.19
  5. Step 5: Solve for x
    x = 243,338,714.19/18,259.67
  6. Step 6: Final answer
    x = 13,326.57

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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.