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Finding the Fourth Proportional to 39,683.40, 54,764.80 and 23,764.80

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Solution

The fourth proportional to 39,683.40, 54,764.80 and 23,764.80 is: 32,796.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,683.40 : 54,764.80 = 23,764.80 : x
  2. Step 2: Convert to fraction form
    39,683.40/54,764.80 = 23,764.80/x
  3. Step 3: Cross multiply
    39,683.40x = 54,764.80 × 23,764.80
  4. Step 4: Simplify right side
    39,683.40x = 1,301,474,519.04
  5. Step 5: Solve for x
    x = 1,301,474,519.04/39,683.40
  6. Step 6: Final answer
    x = 32,796.45

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.