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Finding the Fourth Proportional to 541,670.21, 812,130.79 and 237,917.78

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Solution

The fourth proportional to 541,670.21, 812,130.79 and 237,917.78 is: 356,712.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    541,670.21 : 812,130.79 = 237,917.78 : x
  2. Step 2: Convert to fraction form
    541,670.21/812,130.79 = 237,917.78/x
  3. Step 3: Cross multiply
    541,670.21x = 812,130.79 × 237,917.78
  4. Step 4: Simplify right side
    541,670.21x = 193,220,354,626.45
  5. Step 5: Solve for x
    x = 193,220,354,626.45/541,670.21
  6. Step 6: Final answer
    x = 356,712.17

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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.