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Finding the Fourth Proportional to 167,817.40, 251,142.90 and 115,329.40

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Solution

The fourth proportional to 167,817.40, 251,142.90 and 115,329.40 is: 172,593.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    167,817.40 : 251,142.90 = 115,329.40 : x
  2. Step 2: Convert to fraction form
    167,817.40/251,142.90 = 115,329.40/x
  3. Step 3: Cross multiply
    167,817.40x = 251,142.90 × 115,329.40
  4. Step 4: Simplify right side
    167,817.40x = 28,964,159,971.26
  5. Step 5: Solve for x
    x = 28,964,159,971.26/167,817.40
  6. Step 6: Final answer
    x = 172,593.31

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1.5x scale

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.