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Finding the Fourth Proportional to 49,643.20, 74,464.80 and 34,868.80

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Solution

The fourth proportional to 49,643.20, 74,464.80 and 34,868.80 is: 52,303.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,643.20 : 74,464.80 = 34,868.80 : x
  2. Step 2: Convert to fraction form
    49,643.20/74,464.80 = 34,868.80/x
  3. Step 3: Cross multiply
    49,643.20x = 74,464.80 × 34,868.80
  4. Step 4: Simplify right side
    49,643.20x = 2,596,498,218.24
  5. Step 5: Solve for x
    x = 2,596,498,218.24/49,643.20
  6. Step 6: Final answer
    x = 52,303.20

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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.