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Finding the Fourth Proportional to 32,578.86, 44,963.66 and 20,643.31

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Solution

The fourth proportional to 32,578.86, 44,963.66 and 20,643.31 is: 28,490.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,578.86 : 44,963.66 = 20,643.31 : x
  2. Step 2: Convert to fraction form
    32,578.86/44,963.66 = 20,643.31/x
  3. Step 3: Cross multiply
    32,578.86x = 44,963.66 × 20,643.31
  4. Step 4: Simplify right side
    32,578.86x = 928,198,772.11
  5. Step 5: Solve for x
    x = 928,198,772.11/32,578.86
  6. Step 6: Final answer
    x = 28,490.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.