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Finding the Fourth Proportional to 345,332.49, 518,072.85 and 195,644.49

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Solution

The fourth proportional to 345,332.49, 518,072.85 and 195,644.49 is: 293,508.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    345,332.49 : 518,072.85 = 195,644.49 : x
  2. Step 2: Convert to fraction form
    345,332.49/518,072.85 = 195,644.49/x
  3. Step 3: Cross multiply
    345,332.49x = 518,072.85 × 195,644.49
  4. Step 4: Simplify right side
    345,332.49x = 101,358,098,521.10
  5. Step 5: Solve for x
    x = 101,358,098,521.10/345,332.49
  6. Step 6: Final answer
    x = 293,508.72

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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.