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Finding the Fourth Proportional to 36,665.76, 50,585.04 and 21,559.20

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Solution

The fourth proportional to 36,665.76, 50,585.04 and 21,559.20 is: 29,743.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    36,665.76 : 50,585.04 = 21,559.20 : x
  2. Step 2: Convert to fraction form
    36,665.76/50,585.04 = 21,559.20/x
  3. Step 3: Cross multiply
    36,665.76x = 50,585.04 × 21,559.20
  4. Step 4: Simplify right side
    36,665.76x = 1,090,572,994.37
  5. Step 5: Solve for x
    x = 1,090,572,994.37/36,665.76
  6. Step 6: Final answer
    x = 29,743.64

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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.