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Finding the Fourth Proportional to 19,356.50, 26,710.53 and 10,972.82

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Solution

The fourth proportional to 19,356.50, 26,710.53 and 10,972.82 is: 15,141.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.50 : 26,710.53 = 10,972.82 : x
  2. Step 2: Convert to fraction form
    19,356.50/26,710.53 = 10,972.82/x
  3. Step 3: Cross multiply
    19,356.50x = 26,710.53 × 10,972.82
  4. Step 4: Simplify right side
    19,356.50x = 293,089,837.79
  5. Step 5: Solve for x
    x = 293,089,837.79/19,356.50
  6. Step 6: Final answer
    x = 15,141.68

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