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Finding the Fourth Proportional to 69,207,943.20, 103,811,914.80 and 69,207,943.20

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Solution

The fourth proportional to 69,207,943.20, 103,811,914.80 and 69,207,943.20 is: 103,811,914.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,207,943.20 : 103,811,914.80 = 69,207,943.20 : x
  2. Step 2: Convert to fraction form
    69,207,943.20/103,811,914.80 = 69,207,943.20/x
  3. Step 3: Cross multiply
    69,207,943.20x = 103,811,914.80 × 69,207,943.20
  4. Step 4: Simplify right side
    69,207,943.20x = 7,184,609,102,961,639
  5. Step 5: Solve for x
    x = 7,184,609,102,961,639/69,207,943.20
  6. Step 6: Final answer
    x = 103,811,914.80

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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.