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Finding the Fourth Proportional to 17,957.90, 26,941.18 and 5,645.90

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Solution

The fourth proportional to 17,957.90, 26,941.18 and 5,645.90 is: 8,470.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,957.90 : 26,941.18 = 5,645.90 : x
  2. Step 2: Convert to fraction form
    17,957.90/26,941.18 = 5,645.90/x
  3. Step 3: Cross multiply
    17,957.90x = 26,941.18 × 5,645.90
  4. Step 4: Simplify right side
    17,957.90x = 152,107,208.16
  5. Step 5: Solve for x
    x = 152,107,208.16/17,957.90
  6. Step 6: Final answer
    x = 8,470.21

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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.