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Finding the Fourth Proportional to 48,860.40, 73,144.80 and 45,976.80

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Solution

The fourth proportional to 48,860.40, 73,144.80 and 45,976.80 is: 68,828.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,860.40 : 73,144.80 = 45,976.80 : x
  2. Step 2: Convert to fraction form
    48,860.40/73,144.80 = 45,976.80/x
  3. Step 3: Cross multiply
    48,860.40x = 73,144.80 × 45,976.80
  4. Step 4: Simplify right side
    48,860.40x = 3,362,963,840.64
  5. Step 5: Solve for x
    x = 3,362,963,840.64/48,860.40
  6. Step 6: Final answer
    x = 68,828.00

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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.