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Finding the Fourth Proportional to 38,456.08, 53,069.24 and 20,792.08

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Solution

The fourth proportional to 38,456.08, 53,069.24 and 20,792.08 is: 28,692.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,456.08 : 53,069.24 = 20,792.08 : x
  2. Step 2: Convert to fraction form
    38,456.08/53,069.24 = 20,792.08/x
  3. Step 3: Cross multiply
    38,456.08x = 53,069.24 × 20,792.08
  4. Step 4: Simplify right side
    38,456.08x = 1,103,419,883.62
  5. Step 5: Solve for x
    x = 1,103,419,883.62/38,456.08
  6. Step 6: Final answer
    x = 28,692.99

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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.