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Finding the Fourth Proportional to 208,497.28, 313,179.18 and 168,561.40

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Solution

The fourth proportional to 208,497.28, 313,179.18 and 168,561.40 is: 253,192.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    208,497.28 : 313,179.18 = 168,561.40 : x
  2. Step 2: Convert to fraction form
    208,497.28/313,179.18 = 168,561.40/x
  3. Step 3: Cross multiply
    208,497.28x = 313,179.18 × 168,561.40
  4. Step 4: Simplify right side
    208,497.28x = 52,789,921,031.65
  5. Step 5: Solve for x
    x = 52,789,921,031.65/208,497.28
  6. Step 6: Final answer
    x = 253,192.37

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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.