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Finding the Fourth Proportional to 356,743.70, 535,115.55 and 146,273.30

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Solution

The fourth proportional to 356,743.70, 535,115.55 and 146,273.30 is: 219,409.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,743.70 : 535,115.55 = 146,273.30 : x
  2. Step 2: Convert to fraction form
    356,743.70/535,115.55 = 146,273.30/x
  3. Step 3: Cross multiply
    356,743.70x = 535,115.55 × 146,273.30
  4. Step 4: Simplify right side
    356,743.70x = 78,273,117,379.82
  5. Step 5: Solve for x
    x = 78,273,117,379.82/356,743.70
  6. Step 6: Final answer
    x = 219,409.95

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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.