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Finding the Fourth Proportional to 626,208.71, 864,110.90 and 354,301.43

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Solution

The fourth proportional to 626,208.71, 864,110.90 and 354,301.43 is: 488,903.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,208.71 : 864,110.90 = 354,301.43 : x
  2. Step 2: Convert to fraction form
    626,208.71/864,110.90 = 354,301.43/x
  3. Step 3: Cross multiply
    626,208.71x = 864,110.90 × 354,301.43
  4. Step 4: Simplify right side
    626,208.71x = 306,155,724,696.94
  5. Step 5: Solve for x
    x = 306,155,724,696.94/626,208.71
  6. Step 6: Final answer
    x = 488,903.65

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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.