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Finding the Fourth Proportional to 108,521.80, 162,588.30 and 92,969.80

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Solution

The fourth proportional to 108,521.80, 162,588.30 and 92,969.80 is: 139,288.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,521.80 : 162,588.30 = 92,969.80 : x
  2. Step 2: Convert to fraction form
    108,521.80/162,588.30 = 92,969.80/x
  3. Step 3: Cross multiply
    108,521.80x = 162,588.30 × 92,969.80
  4. Step 4: Simplify right side
    108,521.80x = 15,115,801,733.34
  5. Step 5: Solve for x
    x = 15,115,801,733.34/108,521.80
  6. Step 6: Final answer
    x = 139,288.16

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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.