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Finding the Fourth Proportional to 73,177.66, 109,753.70 and 20,574.64

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Solution

The fourth proportional to 73,177.66, 109,753.70 and 20,574.64 is: 30,858.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,177.66 : 109,753.70 = 20,574.64 : x
  2. Step 2: Convert to fraction form
    73,177.66/109,753.70 = 20,574.64/x
  3. Step 3: Cross multiply
    73,177.66x = 109,753.70 × 20,574.64
  4. Step 4: Simplify right side
    73,177.66x = 2,258,142,866.17
  5. Step 5: Solve for x
    x = 2,258,142,866.17/73,177.66
  6. Step 6: Final answer
    x = 30,858.36

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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.