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Finding the Fourth Proportional to 108,562.77, 162,900.40 and 72,564.40

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Solution

The fourth proportional to 108,562.77, 162,900.40 and 72,564.40 is: 108,884.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,562.77 : 162,900.40 = 72,564.40 : x
  2. Step 2: Convert to fraction form
    108,562.77/162,900.40 = 72,564.40/x
  3. Step 3: Cross multiply
    108,562.77x = 162,900.40 × 72,564.40
  4. Step 4: Simplify right side
    108,562.77x = 11,820,770,651.05
  5. Step 5: Solve for x
    x = 11,820,770,651.05/108,562.77
  6. Step 6: Final answer
    x = 108,884.21

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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.