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Finding the Fourth Proportional to 210,452.69, 315,597.15 and 68,263.58

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Solution

The fourth proportional to 210,452.69, 315,597.15 and 68,263.58 is: 102,368.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,452.69 : 315,597.15 = 68,263.58 : x
  2. Step 2: Convert to fraction form
    210,452.69/315,597.15 = 68,263.58/x
  3. Step 3: Cross multiply
    210,452.69x = 315,597.15 × 68,263.58
  4. Step 4: Simplify right side
    210,452.69x = 21,543,789,377.49
  5. Step 5: Solve for x
    x = 21,543,789,377.49/210,452.69
  6. Step 6: Final answer
    x = 102,368.80

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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.