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Finding the Fourth Proportional to 626,418.83, 864,458.54 and 339,938.91

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Solution

The fourth proportional to 626,418.83, 864,458.54 and 339,938.91 is: 469,116.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,418.83 : 864,458.54 = 339,938.91 : x
  2. Step 2: Convert to fraction form
    626,418.83/864,458.54 = 339,938.91/x
  3. Step 3: Cross multiply
    626,418.83x = 864,458.54 × 339,938.91
  4. Step 4: Simplify right side
    626,418.83x = 293,863,092,128.10
  5. Step 5: Solve for x
    x = 293,863,092,128.10/626,418.83
  6. Step 6: Final answer
    x = 469,116.00

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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.