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Finding the Fourth Proportional to 393,518.16, 590,313.42 and 168,827.94

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Solution

The fourth proportional to 393,518.16, 590,313.42 and 168,827.94 is: 253,257.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,518.16 : 590,313.42 = 168,827.94 : x
  2. Step 2: Convert to fraction form
    393,518.16/590,313.42 = 168,827.94/x
  3. Step 3: Cross multiply
    393,518.16x = 590,313.42 × 168,827.94
  4. Step 4: Simplify right side
    393,518.16x = 99,661,398,652.95
  5. Step 5: Solve for x
    x = 99,661,398,652.95/393,518.16
  6. Step 6: Final answer
    x = 253,257.43

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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.