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Finding the Fourth Proportional to 116,208, 160,372.28 and 91,013.76

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Solution

The fourth proportional to 116,208, 160,372.28 and 91,013.76 is: 125,603.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,208 : 160,372.28 = 91,013.76 : x
  2. Step 2: Convert to fraction form
    116,208/160,372.28 = 91,013.76/x
  3. Step 3: Cross multiply
    116,208x = 160,372.28 × 91,013.76
  4. Step 4: Simplify right side
    116,208x = 14,596,084,202.57
  5. Step 5: Solve for x
    x = 14,596,084,202.57/116,208
  6. Step 6: Final answer
    x = 125,603.09

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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.