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Finding the Fourth Proportional to 356,723.70, 535,085.55 and 146,253.30

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Solution

The fourth proportional to 356,723.70, 535,085.55 and 146,253.30 is: 219,379.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,723.70 : 535,085.55 = 146,253.30 : x
  2. Step 2: Convert to fraction form
    356,723.70/535,085.55 = 146,253.30/x
  3. Step 3: Cross multiply
    356,723.70x = 535,085.55 × 146,253.30
  4. Step 4: Simplify right side
    356,723.70x = 78,258,027,469.82
  5. Step 5: Solve for x
    x = 78,258,027,469.82/356,723.70
  6. Step 6: Final answer
    x = 219,379.95

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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.