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Finding the Fourth Proportional to 84,576.66, 116,869.76 and 80,477.26

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Solution

The fourth proportional to 84,576.66, 116,869.76 and 80,477.26 is: 111,205.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,576.66 : 116,869.76 = 80,477.26 : x
  2. Step 2: Convert to fraction form
    84,576.66/116,869.76 = 80,477.26/x
  3. Step 3: Cross multiply
    84,576.66x = 116,869.76 × 80,477.26
  4. Step 4: Simplify right side
    84,576.66x = 9,405,358,061.66
  5. Step 5: Solve for x
    x = 9,405,358,061.66/84,576.66
  6. Step 6: Final answer
    x = 111,205.13

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.