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Finding the Fourth Proportional to 7,357.80, 11,023.90 and 4,759.40

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Solution

The fourth proportional to 7,357.80, 11,023.90 and 4,759.40 is: 7,130.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,357.80 : 11,023.90 = 4,759.40 : x
  2. Step 2: Convert to fraction form
    7,357.80/11,023.90 = 4,759.40/x
  3. Step 3: Cross multiply
    7,357.80x = 11,023.90 × 4,759.40
  4. Step 4: Simplify right side
    7,357.80x = 52,467,149.66
  5. Step 5: Solve for x
    x = 52,467,149.66/7,357.80
  6. Step 6: Final answer
    x = 7,130.82

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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.