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Finding the Fourth Proportional to 393,311.49, 589,967.91 and 168,526.23

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Solution

The fourth proportional to 393,311.49, 589,967.91 and 168,526.23 is: 252,789.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,311.49 : 589,967.91 = 168,526.23 : x
  2. Step 2: Convert to fraction form
    393,311.49/589,967.91 = 168,526.23/x
  3. Step 3: Cross multiply
    393,311.49x = 589,967.91 × 168,526.23
  4. Step 4: Simplify right side
    393,311.49x = 99,425,067,693.28
  5. Step 5: Solve for x
    x = 99,425,067,693.28/393,311.49
  6. Step 6: Final answer
    x = 252,789.63

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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.