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Finding the Fourth Proportional to 43,865.80, 65,798.70 and 40,928.20

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Solution

The fourth proportional to 43,865.80, 65,798.70 and 40,928.20 is: 61,392.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    43,865.80 : 65,798.70 = 40,928.20 : x
  2. Step 2: Convert to fraction form
    43,865.80/65,798.70 = 40,928.20/x
  3. Step 3: Cross multiply
    43,865.80x = 65,798.70 × 40,928.20
  4. Step 4: Simplify right side
    43,865.80x = 2,693,022,353.34
  5. Step 5: Solve for x
    x = 2,693,022,353.34/43,865.80
  6. Step 6: Final answer
    x = 61,392.30

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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.