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Finding the Fourth Proportional to 13,357.43, 18,416.50 and 8,568.93

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Solution

The fourth proportional to 13,357.43, 18,416.50 and 8,568.93 is: 11,814.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,357.43 : 18,416.50 = 8,568.93 : x
  2. Step 2: Convert to fraction form
    13,357.43/18,416.50 = 8,568.93/x
  3. Step 3: Cross multiply
    13,357.43x = 18,416.50 × 8,568.93
  4. Step 4: Simplify right side
    13,357.43x = 157,809,699.35
  5. Step 5: Solve for x
    x = 157,809,699.35/13,357.43
  6. Step 6: Final answer
    x = 11,814.38

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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.