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Finding the Fourth Proportional to 445,843.60, 668,851.80 and 193,123.60

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Solution

The fourth proportional to 445,843.60, 668,851.80 and 193,123.60 is: 289,722.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,843.60 : 668,851.80 = 193,123.60 : x
  2. Step 2: Convert to fraction form
    445,843.60/668,851.80 = 193,123.60/x
  3. Step 3: Cross multiply
    445,843.60x = 668,851.80 × 193,123.60
  4. Step 4: Simplify right side
    445,843.60x = 129,171,067,482.48
  5. Step 5: Solve for x
    x = 129,171,067,482.48/445,843.60
  6. Step 6: Final answer
    x = 289,722.83

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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.