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Finding the Fourth Proportional to 52,389,940.80, 78,584,911.20 and 26,880,772.80

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Solution

The fourth proportional to 52,389,940.80, 78,584,911.20 and 26,880,772.80 is: 40,321,159.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,389,940.80 : 78,584,911.20 = 26,880,772.80 : x
  2. Step 2: Convert to fraction form
    52,389,940.80/78,584,911.20 = 26,880,772.80/x
  3. Step 3: Cross multiply
    52,389,940.80x = 78,584,911.20 × 26,880,772.80
  4. Step 4: Simplify right side
    52,389,940.80x = 2,112,423,143,475,375.50
  5. Step 5: Solve for x
    x = 2,112,423,143,475,375.50/52,389,940.80
  6. Step 6: Final answer
    x = 40,321,159.20

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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.