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Finding the Fourth Proportional to 625,745.71, 863,465.16 and 384,038.47

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Solution

The fourth proportional to 625,745.71, 863,465.16 and 384,038.47 is: 529,933.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    625,745.71 : 863,465.16 = 384,038.47 : x
  2. Step 2: Convert to fraction form
    625,745.71/863,465.16 = 384,038.47/x
  3. Step 3: Cross multiply
    625,745.71x = 863,465.16 × 384,038.47
  4. Step 4: Simplify right side
    625,745.71x = 331,603,838,944.71
  5. Step 5: Solve for x
    x = 331,603,838,944.71/625,745.71
  6. Step 6: Final answer
    x = 529,933.86

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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.