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Finding the Fourth Proportional to 108,712.10, 151,885.90 and 108,712.10

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Solution

The fourth proportional to 108,712.10, 151,885.90 and 108,712.10 is: 151,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,712.10 : 151,885.90 = 108,712.10 : x
  2. Step 2: Convert to fraction form
    108,712.10/151,885.90 = 108,712.10/x
  3. Step 3: Cross multiply
    108,712.10x = 151,885.90 × 108,712.10
  4. Step 4: Simplify right side
    108,712.10x = 16,511,835,149.39
  5. Step 5: Solve for x
    x = 16,511,835,149.39/108,712.10
  6. Step 6: Final answer
    x = 151,885.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.