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Finding the Fourth Proportional to 687,028,664.40, 1,030,542,996.60 and 687,028,664.40

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Solution

The fourth proportional to 687,028,664.40, 1,030,542,996.60 and 687,028,664.40 is: 1,030,542,996.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    687,028,664.40 : 1,030,542,996.60 = 687,028,664.40 : x
  2. Step 2: Convert to fraction form
    687,028,664.40/1,030,542,996.60 = 687,028,664.40/x
  3. Step 3: Cross multiply
    687,028,664.40x = 1,030,542,996.60 × 687,028,664.40
  4. Step 4: Simplify right side
    687,028,664.40x = 708,012,578,560,871,680
  5. Step 5: Solve for x
    x = 708,012,578,560,871,680/687,028,664.40
  6. Step 6: Final answer
    x = 1,030,542,996.60

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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.