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Finding the Fourth Proportional to 19,368.75, 26,728.88 and 10,536.75

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Solution

The fourth proportional to 19,368.75, 26,728.88 and 10,536.75 is: 14,540.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,368.75 : 26,728.88 = 10,536.75 : x
  2. Step 2: Convert to fraction form
    19,368.75/26,728.88 = 10,536.75/x
  3. Step 3: Cross multiply
    19,368.75x = 26,728.88 × 10,536.75
  4. Step 4: Simplify right side
    19,368.75x = 281,635,473.66
  5. Step 5: Solve for x
    x = 281,635,473.66/19,368.75
  6. Step 6: Final answer
    x = 14,540.72

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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.