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Finding the Fourth Proportional to 353,013.56, 487,161.96 and 191,868.98

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Solution

The fourth proportional to 353,013.56, 487,161.96 and 191,868.98 is: 264,780.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,013.56 : 487,161.96 = 191,868.98 : x
  2. Step 2: Convert to fraction form
    353,013.56/487,161.96 = 191,868.98/x
  3. Step 3: Cross multiply
    353,013.56x = 487,161.96 × 191,868.98
  4. Step 4: Simplify right side
    353,013.56x = 93,471,268,360.00
  5. Step 5: Solve for x
    x = 93,471,268,360.00/353,013.56
  6. Step 6: Final answer
    x = 264,780.96

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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.