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Finding the Fourth Proportional to 51,907.80, 72,867.75 and 51,907.80

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Solution

The fourth proportional to 51,907.80, 72,867.75 and 51,907.80 is: 72,867.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,907.80 : 72,867.75 = 51,907.80 : x
  2. Step 2: Convert to fraction form
    51,907.80/72,867.75 = 51,907.80/x
  3. Step 3: Cross multiply
    51,907.80x = 72,867.75 × 51,907.80
  4. Step 4: Simplify right side
    51,907.80x = 3,782,404,593.45
  5. Step 5: Solve for x
    x = 3,782,404,593.45/51,907.80
  6. Step 6: Final answer
    x = 72,867.75

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.