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Finding the Fourth Proportional to 71,692,706.20, 107,339,993.70 and 69,702,050.20

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Solution

The fourth proportional to 71,692,706.20, 107,339,993.70 and 69,702,050.20 is: 104,359,537.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,692,706.20 : 107,339,993.70 = 69,702,050.20 : x
  2. Step 2: Convert to fraction form
    71,692,706.20/107,339,993.70 = 69,702,050.20/x
  3. Step 3: Cross multiply
    71,692,706.20x = 107,339,993.70 × 69,702,050.20
  4. Step 4: Simplify right side
    71,692,706.20x = 7,481,817,629,345,084
  5. Step 5: Solve for x
    x = 7,481,817,629,345,084/71,692,706.20
  6. Step 6: Final answer
    x = 104,359,537.06

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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.