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Finding the Fourth Proportional to 17,888.70, 24,709.66 and 13,613.81

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Solution

The fourth proportional to 17,888.70, 24,709.66 and 13,613.81 is: 18,804.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,888.70 : 24,709.66 = 13,613.81 : x
  2. Step 2: Convert to fraction form
    17,888.70/24,709.66 = 13,613.81/x
  3. Step 3: Cross multiply
    17,888.70x = 24,709.66 × 13,613.81
  4. Step 4: Simplify right side
    17,888.70x = 336,392,535.40
  5. Step 5: Solve for x
    x = 336,392,535.40/17,888.70
  6. Step 6: Final answer
    x = 18,804.75

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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.