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Finding the Fourth Proportional to 238,613.40, 357,911.88 and 61,121.94

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Solution

The fourth proportional to 238,613.40, 357,911.88 and 61,121.94 is: 91,680.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    238,613.40 : 357,911.88 = 61,121.94 : x
  2. Step 2: Convert to fraction form
    238,613.40/357,911.88 = 61,121.94/x
  3. Step 3: Cross multiply
    238,613.40x = 357,911.88 × 61,121.94
  4. Step 4: Simplify right side
    238,613.40x = 21,876,268,454.65
  5. Step 5: Solve for x
    x = 21,876,268,454.65/238,613.40
  6. Step 6: Final answer
    x = 91,680.80

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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.