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Finding the Fourth Proportional to 356,439.88, 534,660.54 and 146,040.04

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Solution

The fourth proportional to 356,439.88, 534,660.54 and 146,040.04 is: 219,060.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,439.88 : 534,660.54 = 146,040.04 : x
  2. Step 2: Convert to fraction form
    356,439.88/534,660.54 = 146,040.04/x
  3. Step 3: Cross multiply
    356,439.88x = 534,660.54 × 146,040.04
  4. Step 4: Simplify right side
    356,439.88x = 78,081,846,648.02
  5. Step 5: Solve for x
    x = 78,081,846,648.02/356,439.88
  6. Step 6: Final answer
    x = 219,060.35

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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.