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Finding the Fourth Proportional to 261,550.50, 392,329.40 and 74,562

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Solution

The fourth proportional to 261,550.50, 392,329.40 and 74,562 is: 111,844.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,550.50 : 392,329.40 = 74,562 : x
  2. Step 2: Convert to fraction form
    261,550.50/392,329.40 = 74,562/x
  3. Step 3: Cross multiply
    261,550.50x = 392,329.40 × 74,562
  4. Step 4: Simplify right side
    261,550.50x = 29,252,864,349.99
  5. Step 5: Solve for x
    x = 29,252,864,349.99/261,550.50
  6. Step 6: Final answer
    x = 111,844.04

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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.