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Finding the Fourth Proportional to 408,595.64, 612,893.44 and 128,134.76

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Solution

The fourth proportional to 408,595.64, 612,893.44 and 128,134.76 is: 192,202.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    408,595.64 : 612,893.44 = 128,134.76 : x
  2. Step 2: Convert to fraction form
    408,595.64/612,893.44 = 128,134.76/x
  3. Step 3: Cross multiply
    408,595.64x = 612,893.44 × 128,134.76
  4. Step 4: Simplify right side
    408,595.64x = 78,532,953,839.97
  5. Step 5: Solve for x
    x = 78,532,953,839.97/408,595.64
  6. Step 6: Final answer
    x = 192,202.13

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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.