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Finding the Fourth Proportional to 57,805.80, 86,708.70 and 18,366.90

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Solution

The fourth proportional to 57,805.80, 86,708.70 and 18,366.90 is: 27,550.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,805.80 : 86,708.70 = 18,366.90 : x
  2. Step 2: Convert to fraction form
    57,805.80/86,708.70 = 18,366.90/x
  3. Step 3: Cross multiply
    57,805.80x = 86,708.70 × 18,366.90
  4. Step 4: Simplify right side
    57,805.80x = 1,592,570,022.03
  5. Step 5: Solve for x
    x = 1,592,570,022.03/57,805.80
  6. Step 6: Final answer
    x = 27,550.35

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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.