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Finding the Fourth Proportional to 668,691.88, 923,112.42 and 423,798.91

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Solution

The fourth proportional to 668,691.88, 923,112.42 and 423,798.91 is: 585,043.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,691.88 : 923,112.42 = 423,798.91 : x
  2. Step 2: Convert to fraction form
    668,691.88/923,112.42 = 423,798.91/x
  3. Step 3: Cross multiply
    668,691.88x = 923,112.42 × 423,798.91
  4. Step 4: Simplify right side
    668,691.88x = 391,214,033,506.44
  5. Step 5: Solve for x
    x = 391,214,033,506.44/668,691.88
  6. Step 6: Final answer
    x = 585,043.79

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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.