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Finding the Fourth Proportional to 245,193.79, 338,518.38 and 194,411.65

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Solution

The fourth proportional to 245,193.79, 338,518.38 and 194,411.65 is: 268,407.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,193.79 : 338,518.38 = 194,411.65 : x
  2. Step 2: Convert to fraction form
    245,193.79/338,518.38 = 194,411.65/x
  3. Step 3: Cross multiply
    245,193.79x = 338,518.38 × 194,411.65
  4. Step 4: Simplify right side
    245,193.79x = 65,811,915,118.54
  5. Step 5: Solve for x
    x = 65,811,915,118.54/245,193.79
  6. Step 6: Final answer
    x = 268,407.76

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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.