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Finding the Fourth Proportional to 19,918.08, 27,489.60 and 19,306.08

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Solution

The fourth proportional to 19,918.08, 27,489.60 and 19,306.08 is: 26,644.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,918.08 : 27,489.60 = 19,306.08 : x
  2. Step 2: Convert to fraction form
    19,918.08/27,489.60 = 19,306.08/x
  3. Step 3: Cross multiply
    19,918.08x = 27,489.60 × 19,306.08
  4. Step 4: Simplify right side
    19,918.08x = 530,716,416.77
  5. Step 5: Solve for x
    x = 530,716,416.77/19,918.08
  6. Step 6: Final answer
    x = 26,644.96

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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.