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Finding the Fourth Proportional to 261,940.73, 392,582.31 and 112,004.66

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Solution

The fourth proportional to 261,940.73, 392,582.31 and 112,004.66 is: 167,866.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,940.73 : 392,582.31 = 112,004.66 : x
  2. Step 2: Convert to fraction form
    261,940.73/392,582.31 = 112,004.66/x
  3. Step 3: Cross multiply
    261,940.73x = 392,582.31 × 112,004.66
  4. Step 4: Simplify right side
    261,940.73x = 43,971,046,190.65
  5. Step 5: Solve for x
    x = 43,971,046,190.65/261,940.73
  6. Step 6: Final answer
    x = 167,866.40

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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.