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Finding the Fourth Proportional to 635,312.39, 877,141.37 and 393,853.01

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Solution

The fourth proportional to 635,312.39, 877,141.37 and 393,853.01 is: 543,771.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    635,312.39 : 877,141.37 = 393,853.01 : x
  2. Step 2: Convert to fraction form
    635,312.39/877,141.37 = 393,853.01/x
  3. Step 3: Cross multiply
    635,312.39x = 877,141.37 × 393,853.01
  4. Step 4: Simplify right side
    635,312.39x = 345,464,765,368.95
  5. Step 5: Solve for x
    x = 345,464,765,368.95/635,312.39
  6. Step 6: Final answer
    x = 543,771.49

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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.