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Finding the Fourth Proportional to 261,575.92, 392,361.60 and 173,224.72

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Solution

The fourth proportional to 261,575.92, 392,361.60 and 173,224.72 is: 259,835.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,575.92 : 392,361.60 = 173,224.72 : x
  2. Step 2: Convert to fraction form
    261,575.92/392,361.60 = 173,224.72/x
  3. Step 3: Cross multiply
    261,575.92x = 392,361.60 × 173,224.72
  4. Step 4: Simplify right side
    261,575.92x = 67,966,728,298.75
  5. Step 5: Solve for x
    x = 67,966,728,298.75/261,575.92
  6. Step 6: Final answer
    x = 259,835.57

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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.