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Finding the Fourth Proportional to 391,894.34, 588,043.80 and 167,194.47

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Solution

The fourth proportional to 391,894.34, 588,043.80 and 167,194.47 is: 250,878.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,894.34 : 588,043.80 = 167,194.47 : x
  2. Step 2: Convert to fraction form
    391,894.34/588,043.80 = 167,194.47/x
  3. Step 3: Cross multiply
    391,894.34x = 588,043.80 × 167,194.47
  4. Step 4: Simplify right side
    391,894.34x = 98,317,671,477.79
  5. Step 5: Solve for x
    x = 98,317,671,477.79/391,894.34
  6. Step 6: Final answer
    x = 250,878.01

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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.