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Finding the Fourth Proportional to 114,289.56, 171,329.34 and 39,391.92

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Solution

The fourth proportional to 114,289.56, 171,329.34 and 39,391.92 is: 59,051.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    114,289.56 : 171,329.34 = 39,391.92 : x
  2. Step 2: Convert to fraction form
    114,289.56/171,329.34 = 39,391.92/x
  3. Step 3: Cross multiply
    114,289.56x = 171,329.34 × 39,391.92
  4. Step 4: Simplify right side
    114,289.56x = 6,748,991,654.93
  5. Step 5: Solve for x
    x = 6,748,991,654.93/114,289.56
  6. Step 6: Final answer
    x = 59,051.69

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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.