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Finding the Fourth Proportional to 261,996.36, 392,665.86 and 112,060.68

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Solution

The fourth proportional to 261,996.36, 392,665.86 and 112,060.68 is: 167,950.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,996.36 : 392,665.86 = 112,060.68 : x
  2. Step 2: Convert to fraction form
    261,996.36/392,665.86 = 112,060.68/x
  3. Step 3: Cross multiply
    261,996.36x = 392,665.86 × 112,060.68
  4. Step 4: Simplify right side
    261,996.36x = 44,002,403,284.38
  5. Step 5: Solve for x
    x = 44,002,403,284.38/261,996.36
  6. Step 6: Final answer
    x = 167,950.44

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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.