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Finding the Fourth Proportional to 663,890.52, 916,164.60 and 377,410.68

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Solution

The fourth proportional to 663,890.52, 916,164.60 and 377,410.68 is: 520,824.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,890.52 : 916,164.60 = 377,410.68 : x
  2. Step 2: Convert to fraction form
    663,890.52/916,164.60 = 377,410.68/x
  3. Step 3: Cross multiply
    663,890.52x = 916,164.60 × 377,410.68
  4. Step 4: Simplify right side
    663,890.52x = 345,770,304,677.93
  5. Step 5: Solve for x
    x = 345,770,304,677.93/663,890.52
  6. Step 6: Final answer
    x = 520,824.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.