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Finding the Fourth Proportional to 626,383.40, 864,411.41 and 339,903.54

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Solution

The fourth proportional to 626,383.40, 864,411.41 and 339,903.54 is: 469,068.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,383.40 : 864,411.41 = 339,903.54 : x
  2. Step 2: Convert to fraction form
    626,383.40/864,411.41 = 339,903.54/x
  3. Step 3: Cross multiply
    626,383.40x = 864,411.41 × 339,903.54
  4. Step 4: Simplify right side
    626,383.40x = 293,816,499,125.15
  5. Step 5: Solve for x
    x = 293,816,499,125.15/626,383.40
  6. Step 6: Final answer
    x = 469,068.15

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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.