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Finding the Fourth Proportional to 5,243,991.68, 7,865,987.52 and 1,880,560.64

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Solution

The fourth proportional to 5,243,991.68, 7,865,987.52 and 1,880,560.64 is: 2,820,840.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,243,991.68 : 7,865,987.52 = 1,880,560.64 : x
  2. Step 2: Convert to fraction form
    5,243,991.68/7,865,987.52 = 1,880,560.64/x
  3. Step 3: Cross multiply
    5,243,991.68x = 7,865,987.52 × 1,880,560.64
  4. Step 4: Simplify right side
    5,243,991.68x = 14,792,466,524,843.21
  5. Step 5: Solve for x
    x = 14,792,466,524,843.21/5,243,991.68
  6. Step 6: Final answer
    x = 2,820,840.96

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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.