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Finding the Fourth Proportional to 590,979,985.40, 886,469,978.10 and 346,091,972.60

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Solution

The fourth proportional to 590,979,985.40, 886,469,978.10 and 346,091,972.60 is: 519,137,958.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    590,979,985.40 : 886,469,978.10 = 346,091,972.60 : x
  2. Step 2: Convert to fraction form
    590,979,985.40/886,469,978.10 = 346,091,972.60/x
  3. Step 3: Cross multiply
    590,979,985.40x = 886,469,978.10 × 346,091,972.60
  4. Step 4: Simplify right side
    590,979,985.40x = 306,800,143,371,307,840
  5. Step 5: Solve for x
    x = 306,800,143,371,307,840/590,979,985.40
  6. Step 6: Final answer
    x = 519,137,958.90

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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.