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Finding the Fourth Proportional to 18,726.40, 27,968.06 and 16,967.92

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Solution

The fourth proportional to 18,726.40, 27,968.06 and 16,967.92 is: 25,341.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,726.40 : 27,968.06 = 16,967.92 : x
  2. Step 2: Convert to fraction form
    18,726.40/27,968.06 = 16,967.92/x
  3. Step 3: Cross multiply
    18,726.40x = 27,968.06 × 16,967.92
  4. Step 4: Simplify right side
    18,726.40x = 474,559,804.64
  5. Step 5: Solve for x
    x = 474,559,804.64/18,726.40
  6. Step 6: Final answer
    x = 25,341.75

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.