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Finding the Fourth Proportional to 17,693.62, 26,518.56 and 8,931.04

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Solution

The fourth proportional to 17,693.62, 26,518.56 and 8,931.04 is: 13,385.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,693.62 : 26,518.56 = 8,931.04 : x
  2. Step 2: Convert to fraction form
    17,693.62/26,518.56 = 8,931.04/x
  3. Step 3: Cross multiply
    17,693.62x = 26,518.56 × 8,931.04
  4. Step 4: Simplify right side
    17,693.62x = 236,838,320.10
  5. Step 5: Solve for x
    x = 236,838,320.10/17,693.62
  6. Step 6: Final answer
    x = 13,385.52

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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.