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Finding the Fourth Proportional to 28,393.92, 42,610.24 and 14,552.64

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Solution

The fourth proportional to 28,393.92, 42,610.24 and 14,552.64 is: 21,838.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,393.92 : 42,610.24 = 14,552.64 : x
  2. Step 2: Convert to fraction form
    28,393.92/42,610.24 = 14,552.64/x
  3. Step 3: Cross multiply
    28,393.92x = 42,610.24 × 14,552.64
  4. Step 4: Simplify right side
    28,393.92x = 620,091,483.03
  5. Step 5: Solve for x
    x = 620,091,483.03/28,393.92
  6. Step 6: Final answer
    x = 21,838.88

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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.