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Finding the Fourth Proportional to 39,179.60, 58,769.40 and 35,680.40

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Solution

The fourth proportional to 39,179.60, 58,769.40 and 35,680.40 is: 53,520.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,179.60 : 58,769.40 = 35,680.40 : x
  2. Step 2: Convert to fraction form
    39,179.60/58,769.40 = 35,680.40/x
  3. Step 3: Cross multiply
    39,179.60x = 58,769.40 × 35,680.40
  4. Step 4: Simplify right side
    39,179.60x = 2,096,915,699.76
  5. Step 5: Solve for x
    x = 2,096,915,699.76/39,179.60
  6. Step 6: Final answer
    x = 53,520.60

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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.