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Finding the Fourth Proportional to 258,596.91, 356,780.67 and 156,589.76

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Solution

The fourth proportional to 258,596.91, 356,780.67 and 156,589.76 is: 216,043.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    258,596.91 : 356,780.67 = 156,589.76 : x
  2. Step 2: Convert to fraction form
    258,596.91/356,780.67 = 156,589.76/x
  3. Step 3: Cross multiply
    258,596.91x = 356,780.67 × 156,589.76
  4. Step 4: Simplify right side
    258,596.91x = 55,868,199,792.68
  5. Step 5: Solve for x
    x = 55,868,199,792.68/258,596.91
  6. Step 6: Final answer
    x = 216,043.57

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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.