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Finding the Fourth Proportional to 635,857.83, 877,266.72 and 394,052.18

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Solution

The fourth proportional to 635,857.83, 877,266.72 and 394,052.18 is: 543,657.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,857.83 : 877,266.72 = 394,052.18 : x
  2. Step 2: Convert to fraction form
    635,857.83/877,266.72 = 394,052.18/x
  3. Step 3: Cross multiply
    635,857.83x = 877,266.72 × 394,052.18
  4. Step 4: Simplify right side
    635,857.83x = 345,688,859,071.12
  5. Step 5: Solve for x
    x = 345,688,859,071.12/635,857.83
  6. Step 6: Final answer
    x = 543,657.47

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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.