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Finding the Fourth Proportional to 520,016,652,115.30, 780,024,978,172.95 and 520,016,652,115.30

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Solution

The fourth proportional to 520,016,652,115.30, 780,024,978,172.95 and 520,016,652,115.30 is: 780,024,978,172.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,016,652,115.30 : 780,024,978,172.95 = 520,016,652,115.30 : x
  2. Step 2: Convert to fraction form
    520,016,652,115.30/780,024,978,172.95 = 520,016,652,115.30/x
  3. Step 3: Cross multiply
    520,016,652,115.30x = 780,024,978,172.95 × 520,016,652,115.30
  4. Step 4: Simplify right side
    520,016,652,115.30x = 405,625,977,715,807,372,705,792
  5. Step 5: Solve for x
    x = 405,625,977,715,807,372,705,792/520,016,652,115.30
  6. Step 6: Final answer
    x = 780,024,978,172.95

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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.