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Finding the Fourth Proportional to 576,228.87, 795,239.82 and 318,155.58

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Solution

The fourth proportional to 576,228.87, 795,239.82 and 318,155.58 is: 439,078.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    576,228.87 : 795,239.82 = 318,155.58 : x
  2. Step 2: Convert to fraction form
    576,228.87/795,239.82 = 318,155.58/x
  3. Step 3: Cross multiply
    576,228.87x = 795,239.82 × 318,155.58
  4. Step 4: Simplify right side
    576,228.87x = 253,009,986,171.20
  5. Step 5: Solve for x
    x = 253,009,986,171.20/576,228.87
  6. Step 6: Final answer
    x = 439,078.98

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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.