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Finding the Fourth Proportional to 17,816.64, 26,712.66 and 7,816.59

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Solution

The fourth proportional to 17,816.64, 26,712.66 and 7,816.59 is: 11,719.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,816.64 : 26,712.66 = 7,816.59 : x
  2. Step 2: Convert to fraction form
    17,816.64/26,712.66 = 7,816.59/x
  3. Step 3: Cross multiply
    17,816.64x = 26,712.66 × 7,816.59
  4. Step 4: Simplify right side
    17,816.64x = 208,801,777.47
  5. Step 5: Solve for x
    x = 208,801,777.47/17,816.64
  6. Step 6: Final answer
    x = 11,719.48

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1.5x scale

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.