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Finding the Fourth Proportional to 261,744.88, 392,696.14 and 93,243.21

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Solution

The fourth proportional to 261,744.88, 392,696.14 and 93,243.21 is: 139,892.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,744.88 : 392,696.14 = 93,243.21 : x
  2. Step 2: Convert to fraction form
    261,744.88/392,696.14 = 93,243.21/x
  3. Step 3: Cross multiply
    261,744.88x = 392,696.14 × 93,243.21
  4. Step 4: Simplify right side
    261,744.88x = 36,616,248,648.21
  5. Step 5: Solve for x
    x = 36,616,248,648.21/261,744.88
  6. Step 6: Final answer
    x = 139,892.89

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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.