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Finding the Fourth Proportional to 55,904.40, 83,921.40 and 33,742.80

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Solution

The fourth proportional to 55,904.40, 83,921.40 and 33,742.80 is: 50,653.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,904.40 : 83,921.40 = 33,742.80 : x
  2. Step 2: Convert to fraction form
    55,904.40/83,921.40 = 33,742.80/x
  3. Step 3: Cross multiply
    55,904.40x = 83,921.40 × 33,742.80
  4. Step 4: Simplify right side
    55,904.40x = 2,831,743,015.92
  5. Step 5: Solve for x
    x = 2,831,743,015.92/55,904.40
  6. Step 6: Final answer
    x = 50,653.31

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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.