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Finding the Fourth Proportional to 35,991.86, 53,987.78 and 19,328.96

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Solution

The fourth proportional to 35,991.86, 53,987.78 and 19,328.96 is: 28,993.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,991.86 : 53,987.78 = 19,328.96 : x
  2. Step 2: Convert to fraction form
    35,991.86/53,987.78 = 19,328.96/x
  3. Step 3: Cross multiply
    35,991.86x = 53,987.78 × 19,328.96
  4. Step 4: Simplify right side
    35,991.86x = 1,043,527,640.11
  5. Step 5: Solve for x
    x = 1,043,527,640.11/35,991.86
  6. Step 6: Final answer
    x = 28,993.43

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Similar ratio
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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.