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Finding the Fourth Proportional to 393,168.56, 589,655.32 and 168,503.51

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Solution

The fourth proportional to 393,168.56, 589,655.32 and 168,503.51 is: 252,713.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    393,168.56 : 589,655.32 = 168,503.51 : x
  2. Step 2: Convert to fraction form
    393,168.56/589,655.32 = 168,503.51/x
  3. Step 3: Cross multiply
    393,168.56x = 589,655.32 × 168,503.51
  4. Step 4: Simplify right side
    393,168.56x = 99,358,991,110.17
  5. Step 5: Solve for x
    x = 99,358,991,110.17/393,168.56
  6. Step 6: Final answer
    x = 252,713.47

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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.