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Finding the Fourth Proportional to 17,655.79, 26,480.76 and 5,809.72

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Solution

The fourth proportional to 17,655.79, 26,480.76 and 5,809.72 is: 8,713.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,655.79 : 26,480.76 = 5,809.72 : x
  2. Step 2: Convert to fraction form
    17,655.79/26,480.76 = 5,809.72/x
  3. Step 3: Cross multiply
    17,655.79x = 26,480.76 × 5,809.72
  4. Step 4: Simplify right side
    17,655.79x = 153,845,800.99
  5. Step 5: Solve for x
    x = 153,845,800.99/17,655.79
  6. Step 6: Final answer
    x = 8,713.62

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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.