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Finding the Fourth Proportional to 57,987.87, 86,992.74 and 18,534.39

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Solution

The fourth proportional to 57,987.87, 86,992.74 and 18,534.39 is: 27,805.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,987.87 : 86,992.74 = 18,534.39 : x
  2. Step 2: Convert to fraction form
    57,987.87/86,992.74 = 18,534.39/x
  3. Step 3: Cross multiply
    57,987.87x = 86,992.74 × 18,534.39
  4. Step 4: Simplify right side
    57,987.87x = 1,612,357,370.33
  5. Step 5: Solve for x
    x = 1,612,357,370.33/57,987.87
  6. Step 6: Final answer
    x = 27,805.08

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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.