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Finding the Fourth Proportional to 573,249.48, 791,078.58 and 318,595.20

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Solution

The fourth proportional to 573,249.48, 791,078.58 and 318,595.20 is: 439,658.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,249.48 : 791,078.58 = 318,595.20 : x
  2. Step 2: Convert to fraction form
    573,249.48/791,078.58 = 318,595.20/x
  3. Step 3: Cross multiply
    573,249.48x = 791,078.58 × 318,595.20
  4. Step 4: Simplify right side
    573,249.48x = 252,033,838,410.82
  5. Step 5: Solve for x
    x = 252,033,838,410.82/573,249.48
  6. Step 6: Final answer
    x = 439,658.21

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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.