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Finding the Fourth Proportional to 668,917.23, 923,106.41 and 382,443.32

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Solution

The fourth proportional to 668,917.23, 923,106.41 and 382,443.32 is: 527,772.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    668,917.23 : 923,106.41 = 382,443.32 : x
  2. Step 2: Convert to fraction form
    668,917.23/923,106.41 = 382,443.32/x
  3. Step 3: Cross multiply
    668,917.23x = 923,106.41 × 382,443.32
  4. Step 4: Simplify right side
    668,917.23x = 353,035,876,494.26
  5. Step 5: Solve for x
    x = 353,035,876,494.26/668,917.23
  6. Step 6: Final answer
    x = 527,772.14

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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.