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Finding the Fourth Proportional to 32,911.78, 49,373.79 and 13,191.87

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Solution

The fourth proportional to 32,911.78, 49,373.79 and 13,191.87 is: 19,790.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,911.78 : 49,373.79 = 13,191.87 : x
  2. Step 2: Convert to fraction form
    32,911.78/49,373.79 = 13,191.87/x
  3. Step 3: Cross multiply
    32,911.78x = 49,373.79 × 13,191.87
  4. Step 4: Simplify right side
    32,911.78x = 651,332,619.09
  5. Step 5: Solve for x
    x = 651,332,619.09/32,911.78
  6. Step 6: Final answer
    x = 19,790.26

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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.