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Finding the Fourth Proportional to 393,338.64, 590,008.32 and 168,553.20

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Solution

The fourth proportional to 393,338.64, 590,008.32 and 168,553.20 is: 252,829.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,338.64 : 590,008.32 = 168,553.20 : x
  2. Step 2: Convert to fraction form
    393,338.64/590,008.32 = 168,553.20/x
  3. Step 3: Cross multiply
    393,338.64x = 590,008.32 × 168,553.20
  4. Step 4: Simplify right side
    393,338.64x = 99,447,790,362.62
  5. Step 5: Solve for x
    x = 99,447,790,362.62/393,338.64
  6. Step 6: Final answer
    x = 252,829.95

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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.