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Finding the Fourth Proportional to 148,592.70, 205,057.92 and 84,931.86

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Solution

The fourth proportional to 148,592.70, 205,057.92 and 84,931.86 is: 117,205.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    148,592.70 : 205,057.92 = 84,931.86 : x
  2. Step 2: Convert to fraction form
    148,592.70/205,057.92 = 84,931.86/x
  3. Step 3: Cross multiply
    148,592.70x = 205,057.92 × 84,931.86
  4. Step 4: Simplify right side
    148,592.70x = 17,415,950,553.33
  5. Step 5: Solve for x
    x = 17,415,950,553.33/148,592.70
  6. Step 6: Final answer
    x = 117,205.97

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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.