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Finding the Fourth Proportional to 7,193.88, 9,930.96 and 4,208.76

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Solution

The fourth proportional to 7,193.88, 9,930.96 and 4,208.76 is: 5,810.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,193.88 : 9,930.96 = 4,208.76 : x
  2. Step 2: Convert to fraction form
    7,193.88/9,930.96 = 4,208.76/x
  3. Step 3: Cross multiply
    7,193.88x = 9,930.96 × 4,208.76
  4. Step 4: Simplify right side
    7,193.88x = 41,797,027.21
  5. Step 5: Solve for x
    x = 41,797,027.21/7,193.88
  6. Step 6: Final answer
    x = 5,810.08

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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.