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Finding the Fourth Proportional to 625,856.22, 938,857.64 and 199,242.63

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Solution

The fourth proportional to 625,856.22, 938,857.64 and 199,242.63 is: 298,887.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,856.22 : 938,857.64 = 199,242.63 : x
  2. Step 2: Convert to fraction form
    625,856.22/938,857.64 = 199,242.63/x
  3. Step 3: Cross multiply
    625,856.22x = 938,857.64 × 199,242.63
  4. Step 4: Simplify right side
    625,856.22x = 187,060,464,392.98
  5. Step 5: Solve for x
    x = 187,060,464,392.98/625,856.22
  6. Step 6: Final answer
    x = 298,887.28

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.