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Finding the Fourth Proportional to 28,531.98, 42,810.27 and 11,014.11

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Solution

The fourth proportional to 28,531.98, 42,810.27 and 11,014.11 is: 16,525.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,531.98 : 42,810.27 = 11,014.11 : x
  2. Step 2: Convert to fraction form
    28,531.98/42,810.27 = 11,014.11/x
  3. Step 3: Cross multiply
    28,531.98x = 42,810.27 × 11,014.11
  4. Step 4: Simplify right side
    28,531.98x = 471,517,022.91
  5. Step 5: Solve for x
    x = 471,517,022.91/28,531.98
  6. Step 6: Final answer
    x = 16,525.91

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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.