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Finding the Fourth Proportional to 64,711.72, 89,301.99 and 36,417.43

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Solution

The fourth proportional to 64,711.72, 89,301.99 and 36,417.43 is: 50,255.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,711.72 : 89,301.99 = 36,417.43 : x
  2. Step 2: Convert to fraction form
    64,711.72/89,301.99 = 36,417.43/x
  3. Step 3: Cross multiply
    64,711.72x = 89,301.99 × 36,417.43
  4. Step 4: Simplify right side
    64,711.72x = 3,252,148,969.69
  5. Step 5: Solve for x
    x = 3,252,148,969.69/64,711.72
  6. Step 6: Final answer
    x = 50,255.95

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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.