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Finding the Fourth Proportional to 200,557.76, 300,633.90 and 125,730.36

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Solution

The fourth proportional to 200,557.76, 300,633.90 and 125,730.36 is: 188,468.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,557.76 : 300,633.90 = 125,730.36 : x
  2. Step 2: Convert to fraction form
    200,557.76/300,633.90 = 125,730.36/x
  3. Step 3: Cross multiply
    200,557.76x = 300,633.90 × 125,730.36
  4. Step 4: Simplify right side
    200,557.76x = 37,798,808,003.72
  5. Step 5: Solve for x
    x = 37,798,808,003.72/200,557.76
  6. Step 6: Final answer
    x = 188,468.44

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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.