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Finding the Fourth Proportional to 48,751.20, 73,126.80 and 43,048.80

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Solution

The fourth proportional to 48,751.20, 73,126.80 and 43,048.80 is: 64,573.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,751.20 : 73,126.80 = 43,048.80 : x
  2. Step 2: Convert to fraction form
    48,751.20/73,126.80 = 43,048.80/x
  3. Step 3: Cross multiply
    48,751.20x = 73,126.80 × 43,048.80
  4. Step 4: Simplify right side
    48,751.20x = 3,148,020,987.84
  5. Step 5: Solve for x
    x = 3,148,020,987.84/48,751.20
  6. Step 6: Final answer
    x = 64,573.20

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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.