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Finding the Fourth Proportional to 625,944.51, 863,846.37 and 354,012.53

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Solution

The fourth proportional to 625,944.51, 863,846.37 and 354,012.53 is: 488,561.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,944.51 : 863,846.37 = 354,012.53 : x
  2. Step 2: Convert to fraction form
    625,944.51/863,846.37 = 354,012.53/x
  3. Step 3: Cross multiply
    625,944.51x = 863,846.37 × 354,012.53
  4. Step 4: Simplify right side
    625,944.51x = 305,812,434,655.78
  5. Step 5: Solve for x
    x = 305,812,434,655.78/625,944.51
  6. Step 6: Final answer
    x = 488,561.57

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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.