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Finding the Fourth Proportional to 18,614.88, 25,658.64 and 17,088.84

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Solution

The fourth proportional to 18,614.88, 25,658.64 and 17,088.84 is: 23,555.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,614.88 : 25,658.64 = 17,088.84 : x
  2. Step 2: Convert to fraction form
    18,614.88/25,658.64 = 17,088.84/x
  3. Step 3: Cross multiply
    18,614.88x = 25,658.64 × 17,088.84
  4. Step 4: Simplify right side
    18,614.88x = 438,476,393.58
  5. Step 5: Solve for x
    x = 438,476,393.58/18,614.88
  6. Step 6: Final answer
    x = 23,555.16

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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.