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Finding the Fourth Proportional to 548,279.69, 755,881.88 and 384,713.96

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Solution

The fourth proportional to 548,279.69, 755,881.88 and 384,713.96 is: 530,383.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    548,279.69 : 755,881.88 = 384,713.96 : x
  2. Step 2: Convert to fraction form
    548,279.69/755,881.88 = 384,713.96/x
  3. Step 3: Cross multiply
    548,279.69x = 755,881.88 × 384,713.96
  4. Step 4: Simplify right side
    548,279.69x = 290,798,305,644.07
  5. Step 5: Solve for x
    x = 290,798,305,644.07/548,279.69
  6. Step 6: Final answer
    x = 530,383.15

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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.