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Finding the Fourth Proportional to 28,578.44, 42,879.90 and 14,737.16

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Solution

The fourth proportional to 28,578.44, 42,879.90 and 14,737.16 is: 22,112.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,578.44 : 42,879.90 = 14,737.16 : x
  2. Step 2: Convert to fraction form
    28,578.44/42,879.90 = 14,737.16/x
  3. Step 3: Cross multiply
    28,578.44x = 42,879.90 × 14,737.16
  4. Step 4: Simplify right side
    28,578.44x = 631,927,947.08
  5. Step 5: Solve for x
    x = 631,927,947.08/28,578.44
  6. Step 6: Final answer
    x = 22,112.05

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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.