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Finding the Fourth Proportional to 393,538.98, 590,501.20 and 168,832.94

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Solution

The fourth proportional to 393,538.98, 590,501.20 and 168,832.94 is: 253,332.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,538.98 : 590,501.20 = 168,832.94 : x
  2. Step 2: Convert to fraction form
    393,538.98/590,501.20 = 168,832.94/x
  3. Step 3: Cross multiply
    393,538.98x = 590,501.20 × 168,832.94
  4. Step 4: Simplify right side
    393,538.98x = 99,696,053,669.53
  5. Step 5: Solve for x
    x = 99,696,053,669.53/393,538.98
  6. Step 6: Final answer
    x = 253,332.09

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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.