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Finding the Fourth Proportional to 261,458.02, 392,252.43 and 74,469.52

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Solution

The fourth proportional to 261,458.02, 392,252.43 and 74,469.52 is: 111,722.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,458.02 : 392,252.43 = 74,469.52 : x
  2. Step 2: Convert to fraction form
    261,458.02/392,252.43 = 74,469.52/x
  3. Step 3: Cross multiply
    261,458.02x = 392,252.43 × 74,469.52
  4. Step 4: Simplify right side
    261,458.02x = 29,210,850,180.93
  5. Step 5: Solve for x
    x = 29,210,850,180.93/261,458.02
  6. Step 6: Final answer
    x = 111,722.91

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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.