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Finding the Fourth Proportional to 136,532.80, 204,799.20 and 38,036.80

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Solution

The fourth proportional to 136,532.80, 204,799.20 and 38,036.80 is: 57,055.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,532.80 : 204,799.20 = 38,036.80 : x
  2. Step 2: Convert to fraction form
    136,532.80/204,799.20 = 38,036.80/x
  3. Step 3: Cross multiply
    136,532.80x = 204,799.20 × 38,036.80
  4. Step 4: Simplify right side
    136,532.80x = 7,789,906,210.56
  5. Step 5: Solve for x
    x = 7,789,906,210.56/136,532.80
  6. Step 6: Final answer
    x = 57,055.20

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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.