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Finding the Fourth Proportional to 115,957.40, 173,676.90 and 113,365.40

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Solution

The fourth proportional to 115,957.40, 173,676.90 and 113,365.40 is: 169,794.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,957.40 : 173,676.90 = 113,365.40 : x
  2. Step 2: Convert to fraction form
    115,957.40/173,676.90 = 113,365.40/x
  3. Step 3: Cross multiply
    115,957.40x = 173,676.90 × 113,365.40
  4. Step 4: Simplify right side
    115,957.40x = 19,688,951,239.26
  5. Step 5: Solve for x
    x = 19,688,951,239.26/115,957.40
  6. Step 6: Final answer
    x = 169,794.69

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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.