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Finding the Fourth Proportional to 633,554.54, 874,305.30 and 378,905.78

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Solution

The fourth proportional to 633,554.54, 874,305.30 and 378,905.78 is: 522,890.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    633,554.54 : 874,305.30 = 378,905.78 : x
  2. Step 2: Convert to fraction form
    633,554.54/874,305.30 = 378,905.78/x
  3. Step 3: Cross multiply
    633,554.54x = 874,305.30 × 378,905.78
  4. Step 4: Simplify right side
    633,554.54x = 331,279,331,654.63
  5. Step 5: Solve for x
    x = 331,279,331,654.63/633,554.54
  6. Step 6: Final answer
    x = 522,890.00

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1.5x scale

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.