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Finding the Fourth Proportional to 45,412,912.45, 68,119,368.68 and 45,412,912.45

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Solution

The fourth proportional to 45,412,912.45, 68,119,368.68 and 45,412,912.45 is: 68,119,368.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,412,912.45 : 68,119,368.68 = 45,412,912.45 : x
  2. Step 2: Convert to fraction form
    45,412,912.45/68,119,368.68 = 45,412,912.45/x
  3. Step 3: Cross multiply
    45,412,912.45x = 68,119,368.68 × 45,412,912.45
  4. Step 4: Simplify right side
    45,412,912.45x = 3,093,498,925,787,047.50
  5. Step 5: Solve for x
    x = 3,093,498,925,787,047.50/45,412,912.45
  6. Step 6: Final answer
    x = 68,119,368.68

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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.