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Finding the Fourth Proportional to 92,859.36, 139,290.72 and 22,739.20

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Solution

The fourth proportional to 92,859.36, 139,290.72 and 22,739.20 is: 34,109.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,859.36 : 139,290.72 = 22,739.20 : x
  2. Step 2: Convert to fraction form
    92,859.36/139,290.72 = 22,739.20/x
  3. Step 3: Cross multiply
    92,859.36x = 139,290.72 × 22,739.20
  4. Step 4: Simplify right side
    92,859.36x = 3,167,359,540.22
  5. Step 5: Solve for x
    x = 3,167,359,540.22/92,859.36
  6. Step 6: Final answer
    x = 34,109.21

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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.