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Finding the Fourth Proportional to 2,953.93, 4,429.92 and 979.11

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Solution

The fourth proportional to 2,953.93, 4,429.92 and 979.11 is: 1,468.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    2,953.93 : 4,429.92 = 979.11 : x
  2. Step 2: Convert to fraction form
    2,953.93/4,429.92 = 979.11/x
  3. Step 3: Cross multiply
    2,953.93x = 4,429.92 × 979.11
  4. Step 4: Simplify right side
    2,953.93x = 4,337,378.97
  5. Step 5: Solve for x
    x = 4,337,378.97/2,953.93
  6. Step 6: Final answer
    x = 1,468.34

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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.