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Finding the Fourth Proportional to 399,690,463.50, 551,403,941.67 and 267,574,020.30

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Solution

The fourth proportional to 399,690,463.50, 551,403,941.67 and 267,574,020.30 is: 369,139,078.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    399,690,463.50 : 551,403,941.67 = 267,574,020.30 : x
  2. Step 2: Convert to fraction form
    399,690,463.50/551,403,941.67 = 267,574,020.30/x
  3. Step 3: Cross multiply
    399,690,463.50x = 551,403,941.67 × 267,574,020.30
  4. Step 4: Simplify right side
    399,690,463.50x = 147,541,369,481,908,576
  5. Step 5: Solve for x
    x = 147,541,369,481,908,576/399,690,463.50
  6. Step 6: Final answer
    x = 369,139,078.75

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.