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Finding the Fourth Proportional to 35,304.75, 48,724.88 and 20,400.75

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Solution

The fourth proportional to 35,304.75, 48,724.88 and 20,400.75 is: 28,155.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,304.75 : 48,724.88 = 20,400.75 : x
  2. Step 2: Convert to fraction form
    35,304.75/48,724.88 = 20,400.75/x
  3. Step 3: Cross multiply
    35,304.75x = 48,724.88 × 20,400.75
  4. Step 4: Simplify right side
    35,304.75x = 994,023,993.66
  5. Step 5: Solve for x
    x = 994,023,993.66/35,304.75
  6. Step 6: Final answer
    x = 28,155.53

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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.