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Finding the Fourth Proportional to 531,930,687.40, 797,896,031.10 and 327,857,343.40

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Solution

The fourth proportional to 531,930,687.40, 797,896,031.10 and 327,857,343.40 is: 491,786,015.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    531,930,687.40 : 797,896,031.10 = 327,857,343.40 : x
  2. Step 2: Convert to fraction form
    531,930,687.40/797,896,031.10 = 327,857,343.40/x
  3. Step 3: Cross multiply
    531,930,687.40x = 797,896,031.10 × 327,857,343.40
  4. Step 4: Simplify right side
    531,930,687.40x = 261,596,073,065,849,760
  5. Step 5: Solve for x
    x = 261,596,073,065,849,760/531,930,687.40
  6. Step 6: Final answer
    x = 491,786,015.10

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.