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Finding the Fourth Proportional to 573,556.17, 791,502.70 and 318,905.13

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Solution

The fourth proportional to 573,556.17, 791,502.70 and 318,905.13 is: 440,086.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,556.17 : 791,502.70 = 318,905.13 : x
  2. Step 2: Convert to fraction form
    573,556.17/791,502.70 = 318,905.13/x
  3. Step 3: Cross multiply
    573,556.17x = 791,502.70 × 318,905.13
  4. Step 4: Simplify right side
    573,556.17x = 252,414,271,438.85
  5. Step 5: Solve for x
    x = 252,414,271,438.85/573,556.17
  6. Step 6: Final answer
    x = 440,086.40

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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.