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Finding the Fourth Proportional to 4,761.58, 7,138.80 and 1,472.74

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Solution

The fourth proportional to 4,761.58, 7,138.80 and 1,472.74 is: 2,208.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,761.58 : 7,138.80 = 1,472.74 : x
  2. Step 2: Convert to fraction form
    4,761.58/7,138.80 = 1,472.74/x
  3. Step 3: Cross multiply
    4,761.58x = 7,138.80 × 1,472.74
  4. Step 4: Simplify right side
    4,761.58x = 10,513,596.31
  5. Step 5: Solve for x
    x = 10,513,596.31/4,761.58
  6. Step 6: Final answer
    x = 2,208.01

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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.