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Finding the Fourth Proportional to 612,193.77, 915,604.74 and 545,198.27

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Solution

The fourth proportional to 612,193.77, 915,604.74 and 545,198.27 is: 815,405.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,193.77 : 915,604.74 = 545,198.27 : x
  2. Step 2: Convert to fraction form
    612,193.77/915,604.74 = 545,198.27/x
  3. Step 3: Cross multiply
    612,193.77x = 915,604.74 × 545,198.27
  4. Step 4: Simplify right side
    612,193.77x = 499,186,115,673.78
  5. Step 5: Solve for x
    x = 499,186,115,673.78/612,193.77
  6. Step 6: Final answer
    x = 815,405.42

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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.