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Finding the Fourth Proportional to 19,012, 26,236.56 and 11,560

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Solution

The fourth proportional to 19,012, 26,236.56 and 11,560 is: 15,952.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,012 : 26,236.56 = 11,560 : x
  2. Step 2: Convert to fraction form
    19,012/26,236.56 = 11,560/x
  3. Step 3: Cross multiply
    19,012x = 26,236.56 × 11,560
  4. Step 4: Simplify right side
    19,012x = 303,294,633.60
  5. Step 5: Solve for x
    x = 303,294,633.60/19,012
  6. Step 6: Final answer
    x = 15,952.80

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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.