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Finding the Fourth Proportional to 115,953.90, 173,671.65 and 113,361.90

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Solution

The fourth proportional to 115,953.90, 173,671.65 and 113,361.90 is: 169,789.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,953.90 : 173,671.65 = 113,361.90 : x
  2. Step 2: Convert to fraction form
    115,953.90/173,671.65 = 113,361.90/x
  3. Step 3: Cross multiply
    115,953.90x = 173,671.65 × 113,361.90
  4. Step 4: Simplify right side
    115,953.90x = 19,687,748,220.14
  5. Step 5: Solve for x
    x = 19,687,748,220.14/115,953.90
  6. Step 6: Final answer
    x = 169,789.44

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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.