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Finding the Fourth Proportional to 626,159.77, 864,100.71 and 354,221.91

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Solution

The fourth proportional to 626,159.77, 864,100.71 and 354,221.91 is: 488,826.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    626,159.77 : 864,100.71 = 354,221.91 : x
  2. Step 2: Convert to fraction form
    626,159.77/864,100.71 = 354,221.91/x
  3. Step 3: Cross multiply
    626,159.77x = 864,100.71 × 354,221.91
  4. Step 4: Simplify right side
    626,159.77x = 306,083,403,928.56
  5. Step 5: Solve for x
    x = 306,083,403,928.56/626,159.77
  6. Step 6: Final answer
    x = 488,826.37

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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.