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Finding the Fourth Proportional to 200,587.79, 300,900.32 and 72,536.11

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Solution

The fourth proportional to 200,587.79, 300,900.32 and 72,536.11 is: 108,810.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    200,587.79 : 300,900.32 = 72,536.11 : x
  2. Step 2: Convert to fraction form
    200,587.79/300,900.32 = 72,536.11/x
  3. Step 3: Cross multiply
    200,587.79x = 300,900.32 × 72,536.11
  4. Step 4: Simplify right side
    200,587.79x = 21,826,137,867.63
  5. Step 5: Solve for x
    x = 21,826,137,867.63/200,587.79
  6. Step 6: Final answer
    x = 108,810.90

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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.