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Finding the Fourth Proportional to 261,950.52, 392,998.31 and 104,289.69

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Solution

The fourth proportional to 261,950.52, 392,998.31 and 104,289.69 is: 156,463.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,950.52 : 392,998.31 = 104,289.69 : x
  2. Step 2: Convert to fraction form
    261,950.52/392,998.31 = 104,289.69/x
  3. Step 3: Cross multiply
    261,950.52x = 392,998.31 × 104,289.69
  4. Step 4: Simplify right side
    261,950.52x = 40,985,671,920.42
  5. Step 5: Solve for x
    x = 40,985,671,920.42/261,950.52
  6. Step 6: Final answer
    x = 156,463.41

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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.