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Finding the Fourth Proportional to 67,907.20, 101,860.80 and 49,475.20

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Solution

The fourth proportional to 67,907.20, 101,860.80 and 49,475.20 is: 74,212.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,907.20 : 101,860.80 = 49,475.20 : x
  2. Step 2: Convert to fraction form
    67,907.20/101,860.80 = 49,475.20/x
  3. Step 3: Cross multiply
    67,907.20x = 101,860.80 × 49,475.20
  4. Step 4: Simplify right side
    67,907.20x = 5,039,583,452.16
  5. Step 5: Solve for x
    x = 5,039,583,452.16/67,907.20
  6. Step 6: Final answer
    x = 74,212.80

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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.