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Finding the Fourth Proportional to 19,112.64, 26,375.64 and 10,729.14

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Solution

The fourth proportional to 19,112.64, 26,375.64 and 10,729.14 is: 14,806.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,112.64 : 26,375.64 = 10,729.14 : x
  2. Step 2: Convert to fraction form
    19,112.64/26,375.64 = 10,729.14/x
  3. Step 3: Cross multiply
    19,112.64x = 26,375.64 × 10,729.14
  4. Step 4: Simplify right side
    19,112.64x = 282,987,934.15
  5. Step 5: Solve for x
    x = 282,987,934.15/19,112.64
  6. Step 6: Final answer
    x = 14,806.32

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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.