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Finding the Fourth Proportional to 3,318,701.80, 4,978,052.70 and 1,724,378.80

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Solution

The fourth proportional to 3,318,701.80, 4,978,052.70 and 1,724,378.80 is: 2,586,568.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,318,701.80 : 4,978,052.70 = 1,724,378.80 : x
  2. Step 2: Convert to fraction form
    3,318,701.80/4,978,052.70 = 1,724,378.80/x
  3. Step 3: Cross multiply
    3,318,701.80x = 4,978,052.70 × 1,724,378.80
  4. Step 4: Simplify right side
    3,318,701.80x = 8,584,048,541,162.76
  5. Step 5: Solve for x
    x = 8,584,048,541,162.76/3,318,701.80
  6. Step 6: Final answer
    x = 2,586,568.20

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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.