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Finding the Fourth Proportional to 48,969.40, 73,543.20 and 42,845.80

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Solution

The fourth proportional to 48,969.40, 73,543.20 and 42,845.80 is: 64,346.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,969.40 : 73,543.20 = 42,845.80 : x
  2. Step 2: Convert to fraction form
    48,969.40/73,543.20 = 42,845.80/x
  3. Step 3: Cross multiply
    48,969.40x = 73,543.20 × 42,845.80
  4. Step 4: Simplify right side
    48,969.40x = 3,151,017,238.56
  5. Step 5: Solve for x
    x = 3,151,017,238.56/48,969.40
  6. Step 6: Final answer
    x = 64,346.66

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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.