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Finding the Fourth Proportional to 124,561.80, 186,842.70 and 115,704.45

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Solution

The fourth proportional to 124,561.80, 186,842.70 and 115,704.45 is: 173,556.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,561.80 : 186,842.70 = 115,704.45 : x
  2. Step 2: Convert to fraction form
    124,561.80/186,842.70 = 115,704.45/x
  3. Step 3: Cross multiply
    124,561.80x = 186,842.70 × 115,704.45
  4. Step 4: Simplify right side
    124,561.80x = 21,618,531,840.02
  5. Step 5: Solve for x
    x = 21,618,531,840.02/124,561.80
  6. Step 6: Final answer
    x = 173,556.68

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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.