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Finding the Fourth Proportional to 18,917.82, 26,106.71 and 10,534.32

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Solution

The fourth proportional to 18,917.82, 26,106.71 and 10,534.32 is: 14,537.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,917.82 : 26,106.71 = 10,534.32 : x
  2. Step 2: Convert to fraction form
    18,917.82/26,106.71 = 10,534.32/x
  3. Step 3: Cross multiply
    18,917.82x = 26,106.71 × 10,534.32
  4. Step 4: Simplify right side
    18,917.82x = 275,016,384.62
  5. Step 5: Solve for x
    x = 275,016,384.62/18,917.82
  6. Step 6: Final answer
    x = 14,537.42

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.