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Finding the Fourth Proportional to 381,137.00, 525,965.40 and 209,051.38

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Solution

The fourth proportional to 381,137.00, 525,965.40 and 209,051.38 is: 288,488.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    381,137.00 : 525,965.40 = 209,051.38 : x
  2. Step 2: Convert to fraction form
    381,137.00/525,965.40 = 209,051.38/x
  3. Step 3: Cross multiply
    381,137.00x = 525,965.40 × 209,051.38
  4. Step 4: Simplify right side
    381,137.00x = 109,953,793,359.71
  5. Step 5: Solve for x
    x = 109,953,793,359.71/381,137.00
  6. Step 6: Final answer
    x = 288,488.90

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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.