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Finding the Fourth Proportional to 7,372.58, 11,060.40 and 4,078.76

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Solution

The fourth proportional to 7,372.58, 11,060.40 and 4,078.76 is: 6,118.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,372.58 : 11,060.40 = 4,078.76 : x
  2. Step 2: Convert to fraction form
    7,372.58/11,060.40 = 4,078.76/x
  3. Step 3: Cross multiply
    7,372.58x = 11,060.40 × 4,078.76
  4. Step 4: Simplify right side
    7,372.58x = 45,112,661.80
  5. Step 5: Solve for x
    x = 45,112,661.80/7,372.58
  6. Step 6: Final answer
    x = 6,118.98

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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.