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Finding the Fourth Proportional to 32,578.96, 44,963.76 and 20,643.40

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Solution

The fourth proportional to 32,578.96, 44,963.76 and 20,643.40 is: 28,490.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,578.96 : 44,963.76 = 20,643.40 : x
  2. Step 2: Convert to fraction form
    32,578.96/44,963.76 = 20,643.40/x
  3. Step 3: Cross multiply
    32,578.96x = 44,963.76 × 20,643.40
  4. Step 4: Simplify right side
    32,578.96x = 928,204,883.18
  5. Step 5: Solve for x
    x = 928,204,883.18/32,578.96
  6. Step 6: Final answer
    x = 28,490.93

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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.