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Finding the Fourth Proportional to 38,792.80, 58,189.20 and 11,087.20

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Solution

The fourth proportional to 38,792.80, 58,189.20 and 11,087.20 is: 16,630.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,792.80 : 58,189.20 = 11,087.20 : x
  2. Step 2: Convert to fraction form
    38,792.80/58,189.20 = 11,087.20/x
  3. Step 3: Cross multiply
    38,792.80x = 58,189.20 × 11,087.20
  4. Step 4: Simplify right side
    38,792.80x = 645,155,298.24
  5. Step 5: Solve for x
    x = 645,155,298.24/38,792.80
  6. Step 6: Final answer
    x = 16,630.80

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1.5x scale

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.