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Finding the Fourth Proportional to 15,744.44, 21,729.06 and 9,030.44

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Solution

The fourth proportional to 15,744.44, 21,729.06 and 9,030.44 is: 12,463.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,744.44 : 21,729.06 = 9,030.44 : x
  2. Step 2: Convert to fraction form
    15,744.44/21,729.06 = 9,030.44/x
  3. Step 3: Cross multiply
    15,744.44x = 21,729.06 × 9,030.44
  4. Step 4: Simplify right side
    15,744.44x = 196,222,972.59
  5. Step 5: Solve for x
    x = 196,222,972.59/15,744.44
  6. Step 6: Final answer
    x = 12,463.00

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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.