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Finding the Fourth Proportional to 529,148.70, 792,945.45 and 213,054.30

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Solution

The fourth proportional to 529,148.70, 792,945.45 and 213,054.30 is: 319,268.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    529,148.70 : 792,945.45 = 213,054.30 : x
  2. Step 2: Convert to fraction form
    529,148.70/792,945.45 = 213,054.30/x
  3. Step 3: Cross multiply
    529,148.70x = 792,945.45 × 213,054.30
  4. Step 4: Simplify right side
    529,148.70x = 168,940,437,787.94
  5. Step 5: Solve for x
    x = 168,940,437,787.94/529,148.70
  6. Step 6: Final answer
    x = 319,268.36

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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.