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Finding the Fourth Proportional to 573,658.88, 791,588.64 and 318,968.96

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Solution

The fourth proportional to 573,658.88, 791,588.64 and 318,968.96 is: 440,143.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,658.88 : 791,588.64 = 318,968.96 : x
  2. Step 2: Convert to fraction form
    573,658.88/791,588.64 = 318,968.96/x
  3. Step 3: Cross multiply
    573,658.88x = 791,588.64 × 318,968.96
  4. Step 4: Simplify right side
    573,658.88x = 252,492,205,248.61
  5. Step 5: Solve for x
    x = 252,492,205,248.61/573,658.88
  6. Step 6: Final answer
    x = 440,143.46

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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.