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Finding the Fourth Proportional to 28,043.82, 42,060.87 and 7,267.32

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Solution

The fourth proportional to 28,043.82, 42,060.87 and 7,267.32 is: 10,899.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,043.82 : 42,060.87 = 7,267.32 : x
  2. Step 2: Convert to fraction form
    28,043.82/42,060.87 = 7,267.32/x
  3. Step 3: Cross multiply
    28,043.82x = 42,060.87 × 7,267.32
  4. Step 4: Simplify right side
    28,043.82x = 305,669,801.77
  5. Step 5: Solve for x
    x = 305,669,801.77/28,043.82
  6. Step 6: Final answer
    x = 10,899.72

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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.