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Finding the Fourth Proportional to 71,087,625.80, 106,631,438.70 and 71,087,625.80

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Solution

The fourth proportional to 71,087,625.80, 106,631,438.70 and 71,087,625.80 is: 106,631,438.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,087,625.80 : 106,631,438.70 = 71,087,625.80 : x
  2. Step 2: Convert to fraction form
    71,087,625.80/106,631,438.70 = 71,087,625.80/x
  3. Step 3: Cross multiply
    71,087,625.80x = 106,631,438.70 × 71,087,625.80
  4. Step 4: Simplify right side
    71,087,625.80x = 7,580,175,812,821,238
  5. Step 5: Solve for x
    x = 7,580,175,812,821,238/71,087,625.80
  6. Step 6: Final answer
    x = 106,631,438.70

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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.