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Finding the Fourth Proportional to 17,957.85, 26,899.92 and 10,539.87

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Solution

The fourth proportional to 17,957.85, 26,899.92 and 10,539.87 is: 15,788.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,957.85 : 26,899.92 = 10,539.87 : x
  2. Step 2: Convert to fraction form
    17,957.85/26,899.92 = 10,539.87/x
  3. Step 3: Cross multiply
    17,957.85x = 26,899.92 × 10,539.87
  4. Step 4: Simplify right side
    17,957.85x = 283,521,659.81
  5. Step 5: Solve for x
    x = 283,521,659.81/17,957.85
  6. Step 6: Final answer
    x = 15,788.17

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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.