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Finding the Fourth Proportional to 108,693.80, 162,846.30 and 93,141.80

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Solution

The fourth proportional to 108,693.80, 162,846.30 and 93,141.80 is: 139,546.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,693.80 : 162,846.30 = 93,141.80 : x
  2. Step 2: Convert to fraction form
    108,693.80/162,846.30 = 93,141.80/x
  3. Step 3: Cross multiply
    108,693.80x = 162,846.30 × 93,141.80
  4. Step 4: Simplify right side
    108,693.80x = 15,167,797,505.34
  5. Step 5: Solve for x
    x = 15,167,797,505.34/108,693.80
  6. Step 6: Final answer
    x = 139,546.11

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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.