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Finding the Fourth Proportional to 391,450.56, 587,106.72 and 154,714.56

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Solution

The fourth proportional to 391,450.56, 587,106.72 and 154,714.56 is: 232,044.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    391,450.56 : 587,106.72 = 154,714.56 : x
  2. Step 2: Convert to fraction form
    391,450.56/587,106.72 = 154,714.56/x
  3. Step 3: Cross multiply
    391,450.56x = 587,106.72 × 154,714.56
  4. Step 4: Simplify right side
    391,450.56x = 90,833,957,857.84
  5. Step 5: Solve for x
    x = 90,833,957,857.84/391,450.56
  6. Step 6: Final answer
    x = 232,044.52

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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.