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Finding the Fourth Proportional to 136,438.52, 204,685.46 and 42,922.52

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Solution

The fourth proportional to 136,438.52, 204,685.46 and 42,922.52 is: 64,392.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,438.52 : 204,685.46 = 42,922.52 : x
  2. Step 2: Convert to fraction form
    136,438.52/204,685.46 = 42,922.52/x
  3. Step 3: Cross multiply
    136,438.52x = 204,685.46 × 42,922.52
  4. Step 4: Simplify right side
    136,438.52x = 8,785,615,750.56
  5. Step 5: Solve for x
    x = 8,785,615,750.56/136,438.52
  6. Step 6: Final answer
    x = 64,392.49

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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.