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Finding the Fourth Proportional to 5,347.97, 7,379.99 and 2,957.79

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Solution

The fourth proportional to 5,347.97, 7,379.99 and 2,957.79 is: 4,081.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,347.97 : 7,379.99 = 2,957.79 : x
  2. Step 2: Convert to fraction form
    5,347.97/7,379.99 = 2,957.79/x
  3. Step 3: Cross multiply
    5,347.97x = 7,379.99 × 2,957.79
  4. Step 4: Simplify right side
    5,347.97x = 21,828,460.62
  5. Step 5: Solve for x
    x = 21,828,460.62/5,347.97
  6. Step 6: Final answer
    x = 4,081.63

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1.5x scale

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.