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Finding the Fourth Proportional to 353,123.44, 487,319.96 and 191,989.32

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Solution

The fourth proportional to 353,123.44, 487,319.96 and 191,989.32 is: 264,950.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,123.44 : 487,319.96 = 191,989.32 : x
  2. Step 2: Convert to fraction form
    353,123.44/487,319.96 = 191,989.32/x
  3. Step 3: Cross multiply
    353,123.44x = 487,319.96 × 191,989.32
  4. Step 4: Simplify right side
    353,123.44x = 93,560,227,742.83
  5. Step 5: Solve for x
    x = 93,560,227,742.83/353,123.44
  6. Step 6: Final answer
    x = 264,950.49

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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.