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Finding the Fourth Proportional to 73,646.70, 110,476.43 and 20,338.70

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Solution

The fourth proportional to 73,646.70, 110,476.43 and 20,338.70 is: 30,509.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,646.70 : 110,476.43 = 20,338.70 : x
  2. Step 2: Convert to fraction form
    73,646.70/110,476.43 = 20,338.70/x
  3. Step 3: Cross multiply
    73,646.70x = 110,476.43 × 20,338.70
  4. Step 4: Simplify right side
    73,646.70x = 2,246,946,966.84
  5. Step 5: Solve for x
    x = 2,246,946,966.84/73,646.70
  6. Step 6: Final answer
    x = 30,509.81

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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.