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Finding the Fourth Proportional to 18,743.96, 28,118.98 and 7,058.04

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Solution

The fourth proportional to 18,743.96, 28,118.98 and 7,058.04 is: 10,588.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,743.96 : 28,118.98 = 7,058.04 : x
  2. Step 2: Convert to fraction form
    18,743.96/28,118.98 = 7,058.04/x
  3. Step 3: Cross multiply
    18,743.96x = 28,118.98 × 7,058.04
  4. Step 4: Simplify right side
    18,743.96x = 198,464,885.60
  5. Step 5: Solve for x
    x = 198,464,885.60/18,743.96
  6. Step 6: Final answer
    x = 10,588.20

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.