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Finding the Fourth Proportional to 622,087.29, 858,425.71 and 346,424.31

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Solution

The fourth proportional to 622,087.29, 858,425.71 and 346,424.31 is: 478,035.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    622,087.29 : 858,425.71 = 346,424.31 : x
  2. Step 2: Convert to fraction form
    622,087.29/858,425.71 = 346,424.31/x
  3. Step 3: Cross multiply
    622,087.29x = 858,425.71 × 346,424.31
  4. Step 4: Simplify right side
    622,087.29x = 297,379,534,273.01
  5. Step 5: Solve for x
    x = 297,379,534,273.01/622,087.29
  6. Step 6: Final answer
    x = 478,035.06

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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.