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Finding the Fourth Proportional to 124,591.87, 171,931.44 and 73,621

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Solution

The fourth proportional to 124,591.87, 171,931.44 and 73,621 is: 101,593.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,591.87 : 171,931.44 = 73,621 : x
  2. Step 2: Convert to fraction form
    124,591.87/171,931.44 = 73,621/x
  3. Step 3: Cross multiply
    124,591.87x = 171,931.44 × 73,621
  4. Step 4: Simplify right side
    124,591.87x = 12,657,764,544.24
  5. Step 5: Solve for x
    x = 12,657,764,544.24/124,591.87
  6. Step 6: Final answer
    x = 101,593.82

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.