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Finding the Fourth Proportional to 354,189.47, 488,781.83 and 193,044.65

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Solution

The fourth proportional to 354,189.47, 488,781.83 and 193,044.65 is: 266,401.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    354,189.47 : 488,781.83 = 193,044.65 : x
  2. Step 2: Convert to fraction form
    354,189.47/488,781.83 = 193,044.65/x
  3. Step 3: Cross multiply
    354,189.47x = 488,781.83 × 193,044.65
  4. Step 4: Simplify right side
    354,189.47x = 94,356,715,337.41
  5. Step 5: Solve for x
    x = 94,356,715,337.41/354,189.47
  6. Step 6: Final answer
    x = 266,401.81

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.