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Finding the Fourth Proportional to 528,188.40, 792,392.94 and 173,174.40

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Solution

The fourth proportional to 528,188.40, 792,392.94 and 173,174.40 is: 259,797.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    528,188.40 : 792,392.94 = 173,174.40 : x
  2. Step 2: Convert to fraction form
    528,188.40/792,392.94 = 173,174.40/x
  3. Step 3: Cross multiply
    528,188.40x = 792,392.94 × 173,174.40
  4. Step 4: Simplify right side
    528,188.40x = 137,222,171,948.74
  5. Step 5: Solve for x
    x = 137,222,171,948.74/528,188.40
  6. Step 6: Final answer
    x = 259,797.78

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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.