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Finding the Fourth Proportional to 612,811,959.81, 845,941,446.89 and 411,985,306.29

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Solution

The fourth proportional to 612,811,959.81, 845,941,446.89 and 411,985,306.29 is: 568,715,150.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    612,811,959.81 : 845,941,446.89 = 411,985,306.29 : x
  2. Step 2: Convert to fraction form
    612,811,959.81/845,941,446.89 = 411,985,306.29/x
  3. Step 3: Cross multiply
    612,811,959.81x = 845,941,446.89 × 411,985,306.29
  4. Step 4: Simplify right side
    612,811,959.81x = 348,515,446,098,266,880
  5. Step 5: Solve for x
    x = 348,515,446,098,266,880/612,811,959.81
  6. Step 6: Final answer
    x = 568,715,150.74

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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.