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Finding the Fourth Proportional to 261,552.38, 392,332.21 and 74,563.88

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Solution

The fourth proportional to 261,552.38, 392,332.21 and 74,563.88 is: 111,846.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,552.38 : 392,332.21 = 74,563.88 : x
  2. Step 2: Convert to fraction form
    261,552.38/392,332.21 = 74,563.88/x
  3. Step 3: Cross multiply
    261,552.38x = 392,332.21 × 74,563.88
  4. Step 4: Simplify right side
    261,552.38x = 29,253,809,678.50
  5. Step 5: Solve for x
    x = 29,253,809,678.50/261,552.38
  6. Step 6: Final answer
    x = 111,846.85

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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.