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Finding the Fourth Proportional to 641,322.54, 962,014.78 and 168,008.34

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Solution

The fourth proportional to 641,322.54, 962,014.78 and 168,008.34 is: 252,020.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    641,322.54 : 962,014.78 = 168,008.34 : x
  2. Step 2: Convert to fraction form
    641,322.54/962,014.78 = 168,008.34/x
  3. Step 3: Cross multiply
    641,322.54x = 962,014.78 × 168,008.34
  4. Step 4: Simplify right side
    641,322.54x = 161,626,506,243.27
  5. Step 5: Solve for x
    x = 161,626,506,243.27/641,322.54
  6. Step 6: Final answer
    x = 252,020.62

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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.